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Full text of "Laptop Service Manual: IBM PANT"

IBM Mobile Systems siol-9623-oo 



ThinkPad 380XD (2635) 
ThinkPad 385XD (2635) 

Hardware Maintenance Manual 



May 1998 



IBM Mobile Systems siol-9623-oo 



ThinkPad 380XD (2635) 
ThinkPad 385XD (2635) 

Hardware Maintenance Manual 



May 1998 



Note 

Before using this information and the product it 
supports, be sure to read the general information 
under "Notices" on page 123. 



First Edition (May 1998) 

The following paragraph does not apply to the United 
Kingdom or any country where such provisions are 
inconsistent with local law: 

INTERNATIONAL BUSINESS MACHINES 
CORPORATION PROVIDES THIS PUBLICATION "AS IS" 
WITHOUT ANY WARRANTY OF ANY KIND, EITHER 
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED 
TO, THE LIMITED WARRANTIES OF 
MERCHANTABILITY OR FITNESS FOR A PARTICULAR 
PURPOSE. Some states do not allow disclaimer or 
express or implied warranties in certain transactions; 
therefore, this statement may not apply to you. 

This publication could include technical inaccuracies or 
typographical errors. Changes are periodically made to 
the information herein; these changes will be incorporated 
in new editions of the publication. IBM may make 
improvements or changes to the products or the programs 
described in this publication at any time. 

It is possible that this publication may contain references 
to, or information about, IBM products (machines and 
programs), programming, or services that are not 
announced in your country. Such references or 
information must not be construed to mean that IBM 
intends to announce such IBM products, programming, or 
services in your country. 

Requests for technical information about IBM products 
should be made to your IBM authorized dealer or your IBM 
marketing representative. 

© Copyright International Business Machines 
Corporation 1998. All rights reserved. Note to U.S. 
Government Users - Documentation related to restricted 
rights - Use, duplication, or disclosure is subject to 
restrictions set forth in GSA ADP Schedule Contract with 
IBM Corp. 



About This Manual 

This manual contains service and reference information for 
IBM ThinkPad 380XD, 385XD (2635) products. Use this 
manual along with the advanced diagnostic tests to 
troubleshoot problems effectively. 

The manual is divided into sections as follows: 

• The Introduction section provides general information, 
guidelines, and safety information required to service 
computers. 

• The product-specific section includes service, 
reference, and product-specific parts information. 

Important 

This manual is intended for trained servicers who are 
familiar with ThinkPad products. Use this manual 
along with the advanced diagnostic tests to 
troubleshoot problems effectively. 

Before servicing an IBM ThinkPad product, be sure to 
review the safety information under "Safety Notices 
(Multi-lingual Translations)" on page 5 and "Safety 
Information" on page 12. 



ill 



Related Publications 

The following product publications are available through 
IBM or your IBM Authorized Dealer. 



Publication 


Part, Form Number 


Mobile Systems HMM 
Volume 1 : Laptop, 
Notebook, Portable, and 
ThinkPad Computers 
(Models L40, CL57, N45, 
N51 , P70/P75, ThinkPad 
300,350,500,510, 71 0T, 
Expansion Unit, Dock I, 
Dock II) 


30H2356, S82G-1501-01 


Mobile Systems HMM 

Volume 2: ThinkPad 

Computers 

(Models 340, 355, 360, 370, 

700, 701,720, 750, 755) 


30H2357, S82G-1 502-03 


Mobile Systems HMM 

Volume 3: ThinkPad 

Computers 

(Models 365, 380, 385, 560, 

760, SelectaDock) 


84H8099, S82G-1 503-05 


Mobile Systems HMM 

Volume 4: ThinkPad 

Computers 

(Models 380, 385, 560, 760, 

765) 


05L1271, S05L-1 270-01 



iv IBM ThinkPad 380XD, 385XD 



Related Diskettes 

The following diskettes are available through IBM or your 
IBM Authorized Dealer. 



Diskette 


Part, Form Number 


ThinkPad 300 (2615) 
Advanced Diagnostics 
Diskette 


33G9361, S33G-9361 


ThinkPad 350, 350C, 425, 
425C (261 8) Advanced 
Diagnostics Diskette 


A211000, GA21-1000 


ThinkPad 365 (2625) 
Advanced Diagnostics 
Diskette 


76H7578, S30H-2498 


ThinkPad 380/385 (2635) 
Maintenance Diskette 


06J0333, S06J-0333 


ThinkPad 500 (2603) 
Advanced Diagnostics 
Diskette 


71G3702, S71G-3702 


ThinkPad 510 (2604) 
Advanced Diagnostics 
Diskette 


83G8095, S83G-8095 


ThinkPad 700 (9552) 
Reference Diskette 


42G2017, S42G-2017 


ThinkPad 700C (9552) 
Reference Diskette 


42G2023, S42G-2023 


ThinkPad 720/720C (9552) 
Reference Diskette 


61G1194, S61G-1194 


ThinkPad Hardware 
Maintenance Diskette 
(for all Models 355, 360, 
560, 750, 755, 760) 


78H5384, S78H-5384 


ThinkPad Dock I (3545) 


71G4140, S71G-4140 


Docking Station (3550) 


42G2428, S42G-2428 


Data/Fax Modem 


61G1556, S61G-1556 


FaxConcentrator/A 


84F8540, S84F-8540 



vi IBM ThinkPad 380XD, 385XD 



IBM ThinkPad 380XD, 385XD (2635) 

Introduction 3 

How to Use Error Messages 4 

How to Read POST Error Messages 4 

Safety Notices (Multi-lingual Translations) 5 

Safety Information 12 

General Safety 12 

Electrical Safety 13 

Safety Inspection Guide 14 

Handling Electrostatic Discharge-Sensitive Devices 16 

Grounding Requirements 16 

Laser Compliance Statement 17 

Read This First 19 

Product Overview 23 

Checkout Guide 25 

Audio Checkout 26 

Diskette Drive Checkout 26 

Fan Checkout 27 

Keyboard or Auxiliary Input Device Checkout . . 27 

Memory Checkout 28 

Power Systems Checkout 29 

Status Indicator Checkout 32 

System Board and CPU Card Checkout 32 

TrackPoint III Checkout 32 

Optional Device Checkout 33 

Port Replicator Checkout 33 

External Monitor Self-Test 34 

Power Management Features 35 

Symptom-to-FRU Index 38 

Numeric Error Codes 38 

Beep Symptoms 43 

Function-Related Symptoms 44 

Indicator-Related Symptoms 44 

Infrared-Related Symptoms 45 

Keyboard- or TrackPoint Ill-Related Symptoms . 45 

LCD-Related Symptoms 46 

Peripheral-Device-Related Symptoms 46 

Power-Related Symptoms 47 

Other Symptoms 47 

Intermittent Problems 47 

Undetermined Problems 48 

Running the Diagnostics 49 

PC Card (PCMCIA) Slots Test 50 

Universal Serial Bus (USB) Test 50 

Displaying the Error Log 50 

Checking the Installed Devices List 50 

Diagnostic Error Codes 52 

Related Service Procedures 55 

Status Indicators 55 

Password Combinations 56 

Running a Low-Level Format 57 

Maintenance Diskette Download 57 

© Copyright IBM Corp. 1998 1 



Fn Key Combinations 57 

FRU Removals and Replacements 58 

Important Notice 59 

FRU Service Procedure 60 

Removal Reference 61 

1010 DIMM Card and Backup Battery 62 

1020 Battery Pack 63 

1030 Hard Disk Drive 64 

1040 Keyboard Unit 66 

1 050 Keyboard and Speaker 69 

1060 CD-ROM Drive and Diskette Drive Assembly 71 
1070 Diskette Drive and CD-ROM Drive .... 72 

1080 LCD Unit 76 

1090 Fan Assembly, CPU Card, Thermal Rubber 79 

1100 Upper Shield Case 82 

1110 Box Speaker and Microphone 83 

1 1 20 DC/DC Card 85 

1 1 30 System Board and PC Card Slot 87 

1 1 40 Battery Pack Latch 90 

2010 LCD Front Cover 91 

2020 LCD Panel 93 

2030 LCD Inverter Card 97 

2040 LCD Misc. Parts 99 

2050 LCD Cable 103 

Locations 104 

Front View 1 04 

Bottom View 1 05 

Rear View 1 06 

Parts Listing 107 

System Unit 108 

Hard Disk Drive, CD-ROM, Diskette Drive ... 110 

LCD FRU 111 

Option Parts List 118 

Notices 123 

Trademarks 123 



IBM ThinkPad 380XD, 385XD 



Introduction 

Important 

Diskette fixes are customer installable. The diskette 
fixes are located on the PC Company Bulletin Board 
Service (BBS). The direct phone line for modem 
connection is 919-557-0001 or tieline 255-0001. 

Advise customers to contact the PC Company 
HelpCenter at 800-772-2227 if they need assistance in 
obtaining or installing any diskette fixes. 

Customers in Canada should call IBM HelpPC at 
800-565-3344 for assistance or down-load information. 
The Canadian BBS phone numbers are: 

Montreal 514-938-3022 

Toronto 905-316-4255 

Vancouver 604-664-6464 

Winnipeg 204-934-2735 



FRU Replacement Strategy 

Ensure that all diskette fixes are installed prior to replacing 
any FRUs. And, use the following strategy to prevent 
unnecessary FRU replacement and service expense: 

• If you are instructed to replace a FRU and that 
does not correct the problem, reinstall the original 
FRU before you continue. 

• Some computers have both a processor board and a 
system board. If you are instructed to replace either 
the processor board or the system board, and the first 
board that you replaced does not correct the problem, 
reinstall the original board, then replace the other 
(processor or system) board. 

• If an adapter or device consists of more than one 
FRU, an error code may be caused by any of the 
FRUs. Before replacing the adapter or device, 
remove the FRUs, one by one, to see if the 
symptoms change. Replace only the FRU that 
changed the symptoms. 

— Attention 



A customized setup configuration (other than default 
settings) may exist on the computer you are servicing. 
Running Automatic Configuration may alter those 
settings. Note the current configuration settings (using 
the View Configuration option) and verify that the 
settings are in place when service is complete. 



The advanced diagnostic tests are intended to test only 
IBM products. Non-IBM products or modified options can 
give false errors and invalid responses. 



IBM ThinkPad 380XD, 385XD (2635) 3 



Hard Disk Drive Replacement Strategy: 

Always try to run a low-level format before replacing a hard 
disk drive. 

— Attention 



The drive startup sequence in the computer you are 
servicing might have been changed. Be extremely 
careful during write operations such as copying, 
saving, or formatting. Data or programs can be 
overwritten if you select an incorrect drive. 



How to Use Error Messages 

Use the error codes displayed on the screen to diagnose 
failures. If more than one error code is displayed, begin 
the diagnosis with the first error code. The cause of the 
first error code can result in false error codes being 
displayed. If no error code is displayed, see if the error 
symptom is listed in the Symptom-to-FRU Index for the 
computer you are servicing. 

How to Read POST Error Messages 

POST error messages are displayed on the screen as 
three, four, five, or eight digits. The error messages that 
can be displayed as shorter POST messages are 
highlighted in this index. Some digits will represent 
different information for SCSI errors versus non-SCSI 
errors. 

The following example shows which digits display the 
shorter POST error messages and also defines the SCSI 
information in an eight-digit error message. 

Shorter POST Messages 



BOOOOOOO 



Size (SCSI) 
Slot Number (SCSI) 
Logical Unit Number (SCSI) 
ID (SCSI) 

All SCSI devices are set to a different SCSI ID. 
Duplicate SCSI ID settings can generate a false error 
message. Use the SCSI ID to determine whether the error 
message is coming from an internal or an external device. 



4 IBM ThinkPad 380XD, 385XD 



Safety Notices (Multi-lingual 
Translations) 

In this manual, safety notices appear in English with a 
page number reference to the appropriate multi-lingual, 
translated safety notice found in this section. 

The following safety notices are provided in English, 
French, German, Italian, and Spanish languages. 

— Safety Notice 1 

Before the computer is powered-on after FRU 
replacement, make sure all screws, springs, or other 
small parts are in place and are not left loose inside 
the computer. Verify this by shaking the computer 
and listening for rattling sounds. Metallic parts or 
metal flakes can cause electrical shorts. 

Avant de remettre I'ordinateur sous tension apres 
remplacement d'une unite en clientele, verifiez que 
tous les ressorts, vis et autres pieces sont bien en 
place et bien fixees. Pour ce faire, secouez I'unite et 
assurez-vous qu'aucun bruit suspect ne se produit. 
Des pieces metalliques ou des copeaux de metal 
pourraient causer un court-circuit. 

Bevor nach einem FRU-Austausch der Computer 
wieder angeschlossen wird, muB sichergestellt 
werden, da3 keine Schrauben, Federn oder andere 
Kleinteile fehlen oder im Gehause vergessen wurden. 
Der Computer muB geschuttelt und auf 
Klappergerausche gepruft werden. Metallteile oder 
-splitter konnen Kurzschltisse erzeugen. 

Prima di accendere I'elaboratore dopo che e stata 
effettuata la sostituzione di una FRU, accertarsi che 
tutte le viti, le molle e tutte le altri parti di piccole 
dimensioni siano nella corretta posizione e non siano 
sparse aH'intemo dell'elaboratore. Verificare cio 
scuotendo I'elaboratore e prestando attenzione ad 
eventuali rumori; eventuali parti o pezzetti metallici 
possono provocare cortocircuiti pericolosi. 

Antes de encender el sistema despues de sustituir 
una FRU, compruebe que todos los tomillos, muelles 
y demas piezas pequehas se encuentran en su sitio y 
no se encuentran sueltas dentro del sistema. 
Compruebelo agitando el sistema y escuchando los 
posibles ruidos que provocarian. Las piezas metalicas 
pueden causar cortocircuitos electricos. 



IBM ThinkPad 380XD, 385XD (2635) 5 



Safety Notice 2 

Some standby batteries contain a small amount of 
nickel and cadmium. Do not disassemble it, recharge 
it, throw it into fire or water, or short-circuit it. Dispose 
of the battery as required by local ordinances or 
regulations. Use only the battery in the appropriate 
parts listing. Use of an incorrect battery can result in 
ignition or explosion of the battery. 

Certaines batteries de secours contiennent du nickel 
et du cadmium. Ne les demontez pas, ne les 
rechargez pas, ne les exposez ni au feu ni a I'eau. 
Ne les mettez pas en court-circuit. Pour les mettre au 
rebut, conformez-vous a la reglementation en vigueur. 
Lorsque vous remplacez la pile de sauvegarde ou 
celle de I'horloge temps reel, veillez a n'utiliser que les 
modeles cites dans la liste de pieces detachees 
adequate. Une batterie ou une pile inappropriee 
risque de prendre feu ou d'exploser. 

Die Bereitschaftsbatterie, die sich unter dem 
Diskettenlaufwerk befindet, kann geringe Mengen 
Nickel und Cadmium enthalten. Sie darf nur durch die 
Verkaufsstelle Oder den IBM Kundendienst 
ausgetauscht werden. Sie darf nicht zerlegt, 
wiederaufgeladen, kurzgeschlossen, oder Feuer oder 
Wasser ausgesetzt werden. Die Batterie kann 
schwere Verbrennungen oder Veratzungen 
verursachen. Bei der Entsorgung die ortlichen 
Bestimmungen fur Sondermull beachten. Beim 
Ersetzen der Bereitschafts- oder Systembatterie nur 
Batterien des Typs verwenden, der in der 
Ersatzteilliste aufgefuhrt ist. Der Einsatz falscher 
Batterien kann zu Entzundung oder Explosion fuhren. 

Alcune batterie di riserva contengono una piccola 
quantita di nichel e cadmio. Non smontarle, ricaricarle, 
gettarle nel fuoco o nell'acqua ne cortocircuitarle. 
Smaltirle secondo la normativa in vigore (DPR 915/82, 
successive disposizioni e disposizioni locali). Quando 
si sostituisce la batteria dell'RTC (real time clock) o la 
batteria di supporto, utilizzare soltanto i tipi inseriti 
nell'appropriato Catalogo parti. L'impiego di una 
batteria non adatta potrebbe determinare I'incendio o 
I'esplosione della batteria stessa. 

Algunas baterias de reserva contienen una pequena 
cantidad de nfquel y cadmio. No las desmonte, ni 
recargue, ni las eche al fuego o al agua ni las 
cortocircuite. Desechelas tal como dispone la 
normativa local. Utilice solo baterias que se 
encuentren en la lista de piezas. La utilizacion de una 
bateria no apropiada puede provocar la ignicion o 
explosion de la misma. 



6 IBM ThinkPad 380XD, 385XD 



Safety Notice 3 

The battery pack contains small amounts of nickel. 
Do not disassemble it, throw it into fire or water, or 
short-circuit it. Dispose of the battery pack as 
required by local ordinances or regulations. Use only 
the battery in the appropriate parts listing when 
replacing the battery pack. Use of an incorrect battery 
can result in ignition or explosion of the battery. 

La batterie contient du nickel. Ne la demontez pas, 
ne I'exposez ni au feu ni a I'eau. Ne la mettez pas en 
court-circuit. Pour la mettre au rebut, conformez-vous 
a la reglementation en vigueur. Lorsque vous 
remplacez la batterie, veillez a n'utiliser que les 
modeles cites dans la liste de pieces detachees 
adequate. En effet, une batterie inappropriee risque 
de prendre feu ou d'exploser. 

Akkus enthalten geringe Mengen von Nickel. Sie 
durfen nicht zerlegt, wiederaufgeladen, 
kurzgeschlossen, oder Feuer oder Wasser ausgesetzt 
werden. Bei der Entsorgung die ortlichen 
Bestimmungen fur Sondermull beachten. Beim 
Ersetzen der Batterie nur Batterien des Typs 
verwenden, der in der Ersatzteilliste aufgefiihrt ist. 
Der Einsatz falscher Batterien kann zu Entzundung 
oder Explosion fuhren. 

La batteria contiene piccole quantita di nichel. Non 
smontarla, gettarla nel fuoco o nell'acqua ne 
cortocircuitarla. Smaltirla secondo la normativa in 
vigore (DPR 915/82, successive disposizioni e 
disposizioni locali). Quando si sostituisce la batteria, 
utilizzare soltanto i tipi inseriti neH'appropriato 
Catalogo parti. L'impiego di una batteria non adatta 
potrebbe determinare I'incendio o I'esplosione della 
batteria stessa. 

Las baterfas contienen pequehas cantidades de 
niquel. No las desmonte, ni recargue, ni las eche al 
fuego o al agua ni las cortocircuite. Desechelas tal 
como dispone la normativa local. Utilice solo baterias 
que se encuentren en la lista de piezas al sustituir la 
bateria. La utilizacion de una bateria no apropiada 
puede provocar la ignicion o explosion de la misma. 



IBM ThinkPad 380XD, 385XD (2635) 



Safety Notice 4 

The lithium battery can cause a fire, explosion, or 
severe burn. Do not recharge it, remove its polarized 
connector, disassemble it, heat it above 100°C 
(212°F), incinerate it, or expose its cell contents to 
water. Dispose of the battery as required by local 
ordinances or regulations. Use only the battery in the 
appropriate parts listing. Use of an incorrect battery 
can result in ignition or explosion of the battery. 

La pile de sauvegarde contient du lithium. Elle 
presente des risques d'incendie, d'explosion ou de 
brulures graves. Ne la rechargez pas, ne retirez pas 
son connecteur polarise et ne la demontez pas. Ne 
I'exposez pas a une temperature superieure a 100°C, 
ne la faites pas bruler et n'en exposez pas le contenu 
a I'eau. Mettez la pile au rebut conformement a la 
reglementation en vigueur. Une pile inappropriee 
risque de prendre feu ou d'exploser. 

Die Systembatterie ist eine Lithiumbatterie. Sie kann 
sich entzunden, explodieren oder schwere 
Verbrennungen hervorrufen. Batterien dieses Typs 
durfen nicht aufgeladen, zerlegt, uber 100 C erhitzt 
Oder verbrannt werden. Auch darf ihr Inhalt nicht mit 
Wasser in Verbindung gebracht Oder der zur richtigen 
Polung angebrachte Verbindungsstecker entfernt 
werden. Bei der Entsorgung die ortlichen 
Bestimmungen fur Sondermull beachten. Beim 
Ersetzen der Batterie nur Batterien des Typs 
verwenden, der in der Ersatzteilliste aufgefuhrt ist. 
Der Einsatz falscher Batterien kann zu Entzundung 
Oder Explosion fuhren. 

La batteria di supporto e una batteria al litio e puo 
incendiarsi, esplodere o procurare gravi ustioni. 
Evitare di ricaricarla, smontarne il connettore 
polarizzato, smontarla, riscaldarla ad una temperatura 
superiore ai 100 gradi centigradi, incendiarla o gettarla 
in acqua. Smaltirla secondo la normativa in vigore 
(DPR 915/82, successive disposizioni e disposizioni 
locali). L'impiego di una batteria non adatta potrebbe 
determinare I'incendio o I'esplosione della batteria 
stessa. 

La bateria de repuesto es una bateria de litio y puede 
provocar incendios, explosiones o quemaduras 
graves. No la recargue, ni quite el conector 
polarizado, ni la desmonte, ni caliente por encima de 
los 100°C (212°F), ni la incinere ni exponga el 
contenido de sus celdas al agua. Desechela tal como 
dispone la normativa local. 



8 IBM ThinkPad 380XD, 385XD 



Safety Notice 5 

If the LCD breaks and the fluid from inside the LCD 
gets into your eyes or on your hands, immediately 
wash the affected areas with water for at least 1 5 
minutes. Seek medical care if any symptoms from the 
fluid are present after washing. 

Si le panneau d'affichage a cristaux liquides se brise 
et que vous recevez dans les yeux ou sur les mains 
une partie du fluide, rincez-les abondamment pendant 
au moins quinze minutes. Consultez un medecin si 
des symptomes persistent apres le lavage. 

Die Leuchtstoffrohre im LCD-Bildschirm enthalt 
Quecksilber. Bei der Entsorgung die ortlichen 
Bestimmungen fur Sondermull beachten. Der 
LCD-Bildschirm besteht aus Glas und kann 
zerbrechen, wenn er unsachgemaB behandelt wird 
Oder der Computer auf den Boden fallt. Wenn der 
Bildschirm beschadigt ist und die darin befindliche 
Flussigkeit in Kontakt mit Haut und Augen gerat, 
sollten die betroffenen Stellen mindestens 15 Minuten 
mit Wasser abgespult und bei Beschwerden 
anschlieBend ein Arzt aufgesucht werden. 

Nel caso che caso I'LCD si dovesse rompere ed il 
liquido in esso contenuto entrasse in contatto con gli 
occhi o le mani, lavare immediatamente le parti 
interessate con acqua corrente per almeno 15 minuti; 
poi consultare un medico se i sintomi dovessero 
permanere. 

Si la LCD se rompe y el fluido de su interior entra en 
contacto con sus ojos o sus manos, lave 
inmediatamente las areas afectadas con agua durante 
15 minutos como minimo. Obtenga atencion medica 
si se presenta algun sintoma del fluido despues de 
lavarse. 



IBM ThinkPad 380XD, 385XD (2635) 9 



Safety Notice 6 

To avoid shock, do not remove the plastic cover that 
surrounds the lower portion of the inverter card. 

Afin d'eviter tout risque de choc electrique, ne retirez 
pas le cache en plastique protegeant la partie 
inferieure de la carte d'alimentation. 

Aus Sicherheitsgriinden die Kunststoffabdeckung, die 
den unteren Teil der Spannungswandlerplatine umgibt, 
nicht entfernen. 

Per evitare scosse elettriche, non rimuovere la 
copertura in plastica che avvolge la parte inferiore 
della scheda invertitore. 

Para evitar descargas, no quite la cubierta de plastico 
que rodea la parte baja de la tarjeta invertida. 



Safety Notice 7 

Though main batteries have low voltage, a shorted or 
grounded battery can produce enough current to burn 
combustible materials or personnel. 

Bien que le voltage des batteries principales soit peu 
eleve, le court-circuit ou la mise a la masse d'une 
batterie peut produire suffisamment de courant pour 
bruler des materiaux combustibles ou causer des 
brulures corporelles graves. 

Obwohl Hauptbatterien eine niedrige Spannung 
haben, konnen sie doch bei KurzschluB Oder Erdung 
genug Strom abgeben, urn brennbare Materialien zu 
entzunden Oder Verletzungen bei Personen 
hervorzurufen. 

Sebbene le batterie di alimentazione siano a basso 
voltaggio, una batteria in corto circuito o a massa pub 
fornire corrente sufficiente da bruciare materiali 
combustibili o provocare ustioni ai tecnici di 
manutenzione. 

Aunque las baterias principales tienen un voltaje bajo, 
una bateria cortocircuitada o con contacto a tierra 
puede producir la corriente suficiente como para 
quemar material combustible o provocar quemaduras 
en el personal. 



10 IBM ThinkPad 380XD, 385XD 



Safety Notice 8 

Before removing any FRU, power-off the computer, 
unplug all power cords from electrical outlets, remove 
the battery pack, then disconnect any interconnecting 
cables. 

Avant de retirer une unite remplagable en clientele, 
mettez le systeme hors tension, debranchez tous les 
cordons d'alimentation des socles de prise de courant, 
retirez la batterie et deconnectez tous les cordons 
d'interface. 

Die Stromzufuhr muR abgeschaltet, alle Stromkabel 
aus der Steckdose gezogen, der Akku entfernt und 
alle Verbindungskabel abgenommen sein, bevor eine 
FRU entfernt wird. 

Prima di rimuovere qualsiasi FRU, spegnere il 
sistema, scollegare dalle prese elettriche tutti i cavi di 
alimentazione, rimuovere la batteria e poi scollegare i 
cavi di interconnessione. 

Antes de quitar una FRU, apague el sistema, 
desenchufe todos los cables de las tomas de corriente 
electrica, quite la bateria y, a continuacion, 
desconecte cualquier cable de conexion entre 
dispositivos. 



IBM ThinkPad 380XD, 385XD (2635) 11 



Safety Information 

The following section contains the safety information that 
you need to be familiar with before servicing an IBM 
mobile computer. 

General Safety 

Follow these rules to ensure general safety: 

• Observe good housekeeping in the area of the 
machines during and after maintenance. 

• When lifting any heavy object: 

1 . Ensure you can stand safely without slipping. 

2. Distribute the weight of the object equally 
between your feet. 

3. Use a slow lifting force. Never move suddenly 
or twist when you attempt to lift. 

4. Lift by standing or by pushing up with your leg 
muscles; this action removes the strain from the 
muscles in your back. Do not attempt to lift any 
objects that weigh more than 16 kg (35 lb) or 
objects that you think are too heavy for you. 

• Do not perform any action that causes hazards to the 
customer, or that makes the equipment unsafe. 

• Before you start the machine, ensure that other 
service representatives and the customer's personnel 
are not in a hazardous position. 

• Place removed covers and other parts in a safe 
place, away from all personnel, while you are 
servicing the machine. 

• Keep your tool case away from walk areas so that 
other people will not trip over it. 

• Do not wear loose clothing that can be trapped in the 
moving parts of a machine. Ensure that your sleeves 
are fastened or rolled up above your elbows. If your 
hair is long, fasten it. 

• Insert the ends of your necktie or scarf inside clothing 
or fasten it with a nonconductive clip, approximately 8 
centimeters (3 inches) from the end. 

• Do not wear jewelry, chains, metal-frame eyeglasses, 
or metal fasteners for your clothing. 

Attention: Metal objects are good electrical 
conductors. 

• Wear safety glasses when you are: hammering, 
drilling soldering, cutting wire, attaching springs, using 
solvents, or working in any other conditions that might 
be hazardous to your eyes. 

• After service, reinstall all safety shields, guards, 
labels, and ground wires. Replace any safety device 
that is worn or defective. 

• Reinstall all covers correctly before returning the 
machine to the customer. 



12 IBM ThinkPad 380XD, 385XD 



Electrical Safety 

Observe the following rules when working on electrical 
equipment. 

Important 

Use only approved tools and test equipment. Some 
hand tools have handles covered with a soft material 
that does not insulate you when working with live 
electrical currents. 

Many customers have, near their equipment, rubber 
floor mats that contain small conductive fibers to 
decrease electrostatic discharges. Do not use this 
type of mat to protect yourself from electrical shock. 



Find the room emergency power-off (EPO) switch, 
disconnecting switch, or electrical outlet. If an 
electrical accident occurs, you can then operate the 
switch or unplug the power cord quickly. 
Do not work alone under hazardous conditions or 
near equipment that has hazardous voltages. 
Disconnect all power before: 

- Performing a mechanical inspection 

- Working near power supplies 

- Removing or installing main units 

Before you start to work on the machine, unplug the 
power cord. If you cannot unplug it, ask the customer 
to power-off the wall box that supplies power to the 
machine and to lock the wall box in the off position. 
If you need to work on a machine that has exposed 
electrical circuits, observe the following precautions: 

- Ensure that another person, familiar with the 
power-off controls, is near you. 

Attention: Another person must be there to 
switch off the power, if necessary. 

- Use only one hand when working with 
powered-on electrical equipment; keep the other 
hand in your pocket or behind your back. 

Attention: There must be a complete circuit to 
cause electrical shock. By observing the above 
rule, you may prevent a current from passing 
through your body. 

- When using testers, set the controls correctly 
and use the approved probe leads and 
accessories for that tester. 

- Stand on suitable rubber mats (obtained locally, 
if necessary) to insulate you from grounds such 
as metal floor strips and machine frames. 

Observe the special safety precautions when you 
work with very high voltages; these instructions are in 
the safety sections of maintenance information. Use 
extreme care when measuring high voltages. 

IBM ThinkPad 380XD, 385XD (2635) 13 



• Regularly inspect and maintain your electrical hand 
tools for safe operational condition. 

• Do not use worn or broken tools and testers. 

• Never assume that power has been disconnected 
from a circuit. First, check that it has been 
powered-off. 

• Always look carefully for possible hazards in your 
work area. Examples of these hazards are moist 
floors, nongrounded power extension cables, power 
surges, and missing safety grounds. 

• Do not touch live electrical circuits with the reflective 
surface of a plastic dental mirror. The surface is 
conductive; such touching can cause personal injury 
and machine damage. 

• Do not service the following parts with the power on 
when they are removed from their normal operating 
places in a machine: 

- Power supply units 

- Pumps 

- Blowers and fans 

- Motor generators 

and similar units. (This practice ensures correct 
grounding of the units.) 

• If an electrical accident occurs: 

- Use caution; do not become a victim 
yourself. 

- Switch off power. 

- Send another person to get medical aid. 

Safety Inspection Guide 

The intent of this inspection guide is to assist you in 
identifying potentially unsafe conditions on these products. 
Each machine, as it was designed and built, had required 
safety items installed to protect users and service 
personnel from injury. This guide addresses only those 
items. However, good judgment should be used to identify 
potential safety hazards due to attachment of non-IBM 
features or options not covered by this inspection guide. 

If any unsafe conditions are present, you must determine 
how serious the apparent hazard could be and whether 
you can continue without first correcting the problem. 

Consider these conditions and the safety hazards they 
present: 

• Electrical hazards, especially primary power (primary 
voltage on the frame can cause serious or fatal 
electrical shock). 

• Explosive hazards, such as a damaged CRT face or 
bulging capacitor 

• Mechanical hazards, such as loose or missing 
hardware 



14 IBM ThinkPad 380XD, 385XD 



The guide consists of a series of steps presented in a 
checklist. Begin the checks with the power off, and the 
power cord disconnected. 

Checklist: 

1. Check exterior covers for damage (loose, broken, or 
sharp edges). 

2. Power-off the computer. Disconnect the power cord. 

3. Check the power cord for: 

a. A third-wire ground connector in good condition. 
Use a meter to measure third-wire ground 
continuity for 0.1 ohm or less between the 
external ground pin and frame ground. 

b. The power cord should be the appropriate type 
as specified in the parts listings. 

c. Insulation must not be frayed or worn. 

4. Remove the cover. 

5. Check for any obvious non-IBM alterations. Use 
good judgment as to the safety of any non-IBM 
alterations. 

6. Check inside the unit for any obvious unsafe 
conditions, such as metal filings, contamination, water 
or other liquids, or signs of fire or smoke damage. 

7. Check for worn, frayed, or pinched cables. 

8. Check that the power-supply cover fasteners (screws 
or rivets) have not been removed or tampered with. 



IBM ThinkPad 380XD, 385XD (2635) 15 



Handling Electrostatic 
Discharge-Sensitive Devices 

Any computer part containing transistors or integrated 
circuits (ICs) should be considered sensitive to electrostatic 
discharge (ESD). ESD damage can occur when there is a 
difference in charge between objects. Protect against ESD 
damage by equalizing the charge so that the machine, the 
part, the work mat, and the person handling the part are all 
at the same charge. 

— Notes 



Use product-specific ESD procedures when they 

exceed the requirements noted here. 

Make sure that the ESD protective devices you 

use have been certified (ISO 9000) as fully 

effective. 



When handling ESD-sensitive parts: 

• Keep the parts in protective packages until they are 
inserted into the product. 

• Avoid contact with other people. 

• Wear a grounded wrist strap against your skin to 
eliminate static on your body. 

• Prevent the part from touching your clothing. Most 
clothing is insulative and retains a charge even when 
you are wearing a wrist strap. 

• Use the black side of a grounded work mat to provide 
a static-free work surface. The mat is especially 
useful when handling ESD-sensitive devices. 

• Select a grounding system, such as those listed 
below, to provide protection that meets the specific 
service requirement. 

— Note 



The use of a grounding system is desirable but 
not required to protect against ESD damage. 



- Attach the ESD ground clip to any frame ground, 
ground braid, or green-wire ground. 

- Use an ESD common ground or reference point 
when working on a double-insulated or 
battery-operated system. You can use coax or 
connector-outside shells on these systems. 

- Use the round ground-prong of the AC plug on 
AC-operated computers. 

Grounding Requirements 

Electrical grounding of the computer is required for 
operator safety and correct system function. Proper 
grounding of the electrical outlet can be verified by a 
certified electrician. 



16 IBM ThinkPad 380XD, 385XD 



Laser Compliance Statement 

Some IBM Personal Computer models are equipped from 
the factory with a CD-ROM drive. CD-ROM drives are 
also sold separately as options. The CD-ROM drive is a 
laser product. The CD-ROM drive is certified in the U.S. to 
conform to the requirements of the Department of Health 
and Human Services 21 Code of Federal Regulations 
(DHHS 21 CFR) Subchapter J for Class 1 laser products. 
Elsewhere, the drive is certified to conform to the 
requirements of the International Electrotechnical 
Commission (IEC) 825 and CENELEC EN 60 825 for 
Class 1 laser products. 

When a CD-ROM drive is installed, note the following. 



A 



CAUTION: 

Use of controls or adjustments or performance of 
procedures other than those specified herein might 
result in hazardous radiation exposure. 

O uso de controles, ajustes ou desempenho de 
procedimentos diferentes daqueles aqui especificados 
pode resultar em perigosa exposicao a radiacao. 



Pour eviter tout risque d'exposition au rayon laser, 
respectez les consignes de reglage et d'utilisation des 
commandes, ainsi que les procedures decrites. 

Werden Steuer- und Einstellelemente anders als hier 
festgesetzt verwendet, kann gefahrliche 
Laserstrahlung auftreten. 

Az itt eloi'rt eljarasoktol, bealli'tasoktol es vezerlesektol 
elterni a lezersugarzas veszelye miatt kockazatos ! 

L'utilizzo di controlli, regolazioni o I'esecuzione di 
procedure diverse da quelle specificate possono 
provocare I'esposizione a 

Mcno^b30BaHne a/ieivieHTOB hsctpomkh m 
Bbino/iHei-me npoueAyp MHbix, neivi yi<a3aHO 
3Aecb, MOxeT npuBecTM k onacHOMy 
paflnaunoHHOMy 06/iyHeHmo. 

Pouzitie kontrol, uprav alebo inych vykonanf od inych 
vyrobcov, ako je v tomto specifikovane, mohlo by mat' 
za nasledok nebezpecenstvo vystavenia sa vyziarovaniu. 



IBM ThinkPad 380XD, 385XD (2635) 17 



El uso de controles o ajustes o la ojocucion de 
procedlmlentos distintos de los aqui especiflcados 
puede provocar la exposicion a radiaciones 
peligrosas. 

Opening the CD-ROM drive could result in exposure to 
hazardous laser radiation. There are no serviceable parts 
inside the CD-ROM drive. Do not open. 

Some CD-ROM drives contain an embedded Class 3A or 
Class 3B laser diode. Note the following. 

DANGER: 

Laser radiation when open. Do not stare into the 
beam, do not view directly with optical instruments, 
and avoid direct exposure to the beam. 

Radiacao por raio laser ao abrir. Nao olhe fixo no feixe 
de luz, nao olhe diretamente por meio de instrumentos 
oticos e evite exposicao direta com o feixe de luz. 

Rayonnement laser si carter ouvert. Evitez de fixer le 
faisceau, de le regarder directement avec des 
instruments optiques, ou de vous exposer au rayon. 

Laserstrahlung bei geoffnetem Gerat. Nicht direkt Oder 
iibor optische Instrumente in den Laserstrahl sehen 
und den Strahlungsbereich meiden. 

Kinyitaskor lezersugar ! Ne nezzen bele se szabad 
szemmel, se optikai eszkozokkel. Keriilje a 
sugarnyalabbal valo erintkezest ! 

Aprendo I'unita vengono emesse radiazioni laser. Non 
fissare il fascio, non guardarlo direttamente con 
strumenti ottici e evitare I'esposizione diretta al fascio. 

OTKpbiBaa, 6epernTecb /ia3epHoro M3nyHeHMsi. 
He CMOTpnTe Ha /lyn, He pa3r/isiAbiBaMTe ero 

C nOMOLU,bK) OnTMHeCKMX MHCTpyMeHTOB, a TaioKe 

M36eraMTe npaivioro B03AePiCTBi/ifl na3epHoro Jiyna. 

Ked' je laserova jednotka otvorena. Vyhnite sa priamemu 
pohl'adu a nehladte priamo s optickymi nastrojmi do luca 
a vyhnite sa priamemu vystaveniu lucov. 

Radiacion laser al abrir. No mire fijamente ni examine 
con instrumental optico el haz de luz. Evite la 
exposicion directa al haz. 



18 IBM ThinkPad 380XD, 385XD 



Read This First 

Before you go to the checkout guide, be sure to read this 
section. 



Important Notes 

Only certified trained personnel should 
service the computer. 

Read FRU service procedures before replacing 
any FRUs. 

Be extremely careful during write operations 
such as copying, saving, or formatting. 

Drives in the computer that you are servicing 
might have been rearranged or the drive start-up 
sequence might have been altered. If you select 
an incorrect drive, data or programs can be 
overwritten. 

Replace FRUs only for the correct model. 
When you replace the FRU, make sure the 
model of the machine and FRU part number are 
correct by referring to the parts list. 
FRUs should not be replaced because of a 
single, unreproducible failure. Single failures 
can occur from a variety of reasons that have 
nothing to do with a hardware problem, such as 
cosmic radiation, electrostatic discharge, or 
software errors. FRU replacement should be 
considered only when a recurring problem exists. 
If this is suspected, clear the error log and run 
the test again. Do not replace any FRUs if log 
errors do not reappear. 
Be careful not to replace a nondefective FRU. 



How to Use Error Messages: Use the error 
codes displayed on the screen to diagnose failures. If 
more than one error code is displayed, begin the diagnosis 
with the first error code. The cause of the first error code 
can result in false error codes being displayed. If no error 
code is displayed, see if the error symptom is listed in the 
"Symptom-to-FRU Index" on page 38. 

Port Replicator Problems: if you suspect a 
problem with the Port Replicator, see "Port Replicator 
Checkout" on page 33. 

How to Diagnose Multiple FRUs: When the 
adapter or device has more than one FRU, the error code 
could be caused by either FRU. Before replacing multiple 
FRUs, try removing or exchanging each FRU, one by one 
in the designated sequence, to see if the symptoms 
change. 



IBM ThinkPad 380XD, 385XD (2635) 19 



What to Do First: The service personnel must fill in 
the following information in the parts exchange form or 
parts return form that is attached to the returned FRU: 

1. Name and phone number of service personnel 

2. Date of service 

3. Date when the part failed 

4. Date of purchase 

5. Failure symptoms, error codes appearing on the 

monitor, and beep symptoms 
6. Procedure index and page number in which the 

failing FRU was detected 

7. Failing FRU name and the part number 

8. Machine type, model number, and serial number 

9. Customer's name and address 

Before checking problems with the computer, determine 
whether the damage is covered under the warranty by 
referring to the following: 

Warranty Note: During the warranty period, the customer 
may be responsible for repair costs if the computer 
damage was caused by misuse, accident, 
modification, unsuitable physical or operating 
environment, or improper maintenance by the 
customer. The following list provides some 
common items that are not covered under warranty 
and some symptoms that may indicate the system 
was subjected to stresses beyond normal use: 



The following is not covered under warranty: 

• LCD panel cracked by applying excessive force 
or by being dropped 
Scratched (cosmetic) parts 
Cracked or broken plastic parts, broken latches, 
broken pins, or broken connectors caused by 
excessive force 

Damage caused by liquid spilled into the system 
Damage caused by improperly inserting a PC 
card or installation of an incompatible card 
Damage caused by any foreign material in the 
FDD 

Diskette drive damage caused by pressing the 
diskette drive cover or inserting diskettes with 
multiple labels 

Damaged or bent diskette eject button 
CD-ROM drive damage caused by shock from 
excessive force, or by being dropped 
Fuses blown by attaching a nonsupported device 
Forgotten computer password (making the 
computer unusable) 



20 IBM ThinkPad 380XD, 385XD 



The following symptoms might indicate damage 
caused by nonwarranted activities: 

• Missing parts may be a symptom of unauthorized 
service or modification. 

• HDD spindles can become noisy from being 
subjected to excessive force or from being 
dropped. 

• 19990303 errors can be caused by exposure to 
strong magnetic fields. 



Disabling the Power-On Password: 

• When only the power-on password is installed. 

1 . Turn off the computer. 

2. Turn the computer upside down, loosen the 
memory-slot cover screw Q , and remove the 
memory-slot cover Q . 

3. Short across the power-on password jumper 
pads Q . 




4. Turn on the computer to clear the password, and 
wait until the POST ends. 

5. Reinstall the memory-slot cover, and turn the 
computer right side up. 

Verify that the password prompt does not appear. 

To reactivate the password, set the password again. 



IBM ThinkPad 380XD, 385XD (2635) 21 



• When both the power-on password and the 
supervisor password are set. 

1 . Turn off the computer. 

2. Turn the computer upside down, loosen the 
memory-slot cover screw Q , remove the 
memory-slot cover Q . 

3. Short the two password jumper pads on the 
system board (see Q ° f the previous page). 

4. Turn on the computer. After a few seconds, the 
password prompt appears. 

5. Enter the supervisor password. The 
"Easy-setup main menu" appears. 

6. Select Password and then Power on. A 
rectangular box appears. 

7. Enter the supervisor password and press the 
Space bar once. 

8. Press Enter twice. 

9. Select Exit. 

10. Select Restart in the "Easy-setup main menu" 
and wait until the POST ends. 

1 1 . Reinstall the memory-slot cover, and turn the 
computer right side up. 

Verify that the password prompt does not appear. 
To reactivate the password, set the password again. 

Power Shutdown Switch: The power shutdown 
switch resets the system regardless of the microcode 
status and forces a power off. Use this push button to 
power off when power is not completely off or when the 
microcode is in a hung state. 



Hole for Power Shutdown Switch 




22 IBM ThinkPad 380XD, 385XD 



Product Overview 

The following table is an overview of the system features 
of the IBM ThinkPad 380XD or 385XD computer. 



Feature 


Description 


Processor 


380XD 2635-8xx/9xx/Bxx 

• Intel® Pentium® 233 
MHz with MMX™ 

2635-Axx 

• Intel® Pentium® 266 
MHz with MMX™ 

2635-Exx 

• Intel® Pentium® II 233 
MHz with MMX™ 

2635-Fxx 

• Intel® Pentium® II 266 
MHz with MMX™ 

385XD 2635-8xx 

• Intel® Pentium® 233 
MHz with MMX™ 

2635-9xx 

• Intel® Pentium® 266 
MHz with MMX™ 

2635-Dxx 

• Intel® Pentium® II 266 
MHz with MMX'" 


Bus Architecture 


PCI Bus 


Memory 
(Standard) 


• 32MB (on the system board) 


Memory (Option) 


2635-8xx/9xx/Axx/Bxx 

• 8MB and 16MB 70ns EDO DIMM 
card 

• 16MB, 32MB, and 64MB EDO 
DIMM card (max. 96MB) 

2635-Dxx/Exx/Fxx 

• 16MB, 32MB, and 64MB 60ns 
EDO DIMM card (max. 96MB) 


CMOS RAM 


242 bytes 


LCD 


380XD 2635-8xx/Exx 

• 12.1 -inch, 16M colors, 800x600 
pixel HPA 1 color LCD 

2635-9xx/Axx/Bxx/Fxx 

• 12.1 -inch, 16M colors, 800x600 
pixel TFT color LCD 

385XD 2635-8xx/9xx/Dxx 

• 12.1 -inch, 16M colors, 800x600 
pixel HPA 2 color LCD 


Diskette Drive 
(Internal) 


• 1.44 MB (3-mode), 3.5-inch 



IBM ThinkPad 380XD, 385XD (2635) 23 



Feature 


Description 


CD-ROM Drive 


• 10x— 24x 


Hard Disk Drive 


380XD 2635-8xx 

• 3.2-GB, 2.5-inch, IDE 
interface 

2635-9xx/Exx 

• 4.0-GB, 2.5-inch, IDE 
interface 

2635-Axx/Fxx 

• 5.1 -GB, 2.5-inch, IDE 
interface 

385XD 2635-8xx 

• 2.1 -GB, 2.5-inch, IDE 
interface 

2635-9xx/Dxx 

• 3.2-GB, 2.5-inch, IDE 
interface 


I/O Port 




Serial 

Parallel 

USB 

External monitor 

Headphone 

Microphone 

Port replicator 


Audio 




16-bit audio 
Internal speakers 
Internal microphone 
Mechanical volume 


Infrared Transfer 




IrDA 1.1 


PC Card 




One Type III 
or two Type I / Type II 
CardBus support 
ZV card support 


AC Adapter 


56Watt type 


Note: 1: High Performance Addressing 



24 IBM ThinkPad 380XD, 385XD 



Checkout Guide 

Use the following procedure as a guide for computer 
problems. The diagnostic tests are intended to test only 
IBM products. Non-IBM products, prototype cards, or 
modified options can give false errors and invalid system 
responses. 

1 . Obtain the symptoms in detail. 

2. Verify the symptoms by running the diagnostic test to 
re-create the same error or by repeating the same 
operation. 

— Note 



To run the diagnostic test, refer to "Running the 
Diagnostics" on page 49. If the symptoms occur 
at irregular intervals and cannot be re-created 
(and therefore cannot be verified), go to 
"Symptom-to-FRU Index" on page 38; then go to 
"Intermittent Problems" on page 47. 



Match the verified symptoms with the following table 
and determine the page to go to. 



Verified Symptoms 


Go To 


Power failure. (The 


"Power Systems 


power indicator does not 


Checkout" on page 29. 


go on or stay on.) 




POST does not 


"Symptom-to-FRU 


complete. No beeps or 


Index" on page 38, and 


error codes are 


then go to "No Beep 


displayed. 


Symptoms" on page 43. 


The configuration is not 


"Checking the Installed 


the same as the 


Devices List" on 


installed devices. 


page 50. 


POST beeps, but no 


"Symptom-to-FRU 


error codes are 


Index" on page 38, and 


displayed. 


then go to "Beep 




Symptoms" on page 43. 


POST detected an error 


"Symptom-to-FRU 


and displayed numeric 


Index" on page 38, and 


error codes. 


then go to "Numeric 




Error Codes" on 




page 38. 


The diagnostic test 


"FRU Codes" on 


detected an error and 


page 53. 


displayed a FRU code. 




Other symptoms (such 


"Symptom-to-FRU 


as LCD monitor 


Index" on page 38, and 


problems). 


then go to "Other 




Symptoms" on page 47. 



IBM ThinkPad 380XD, 385XD (2635) 25 



Audio Checkout 

1 . Go to the diagnostic menu by selecting Test in the 
Easy-Setup menu. 

2. Select Audio and run the diagnostic tests. 

3. If the test detects an audio problem, replace the 
system board. 

Diskette Drive Checkout 

This checkout is to isolate the problem to a controller, 
drive, or diskette. A write-enabled, blank, formatted 2HD 
diskette is required. 

FDD-1 represents a diskette drive in the ThinkPad 
computer. 

— Attention 



Make sure that the diskette does not have more than 
one label on its surface. Inserting diskettes with 
multiple labels into the drive can damage it. 



Take the following procedure to select the test device: 

1 . Click on Test in the Easy-Setup menu. 

2. Press Ctrl+A to enter the advanced diagnostic menu. 
The ThinkPad FRU Connections window appears. 

3. Click on Exit The keyboard layout appears on the 
screen. 

4. Click on Exit. 

5. Click on FDD-1. 

6. Type Y (Yes) to the question that appears on the 
screen. Insert a blank diskette into the drive when 
instructed. 

7. Press Enter to run the diskette drive test. 

a. If the controller test detects an error and FRU 
code 10 appears, replace the system board. 

b. If the controller test runs without any errors, the 
drive read/write tests start automatically. 

c. If the drive read/write test detects an error and 
either FRU code 50 for FDD-1 appears, replace 
the drive. 

If the drive is attached to a port replicator, go to 
"Port Replicator Checkout" on page 33 to isolate 
the replicator. Otherwise, go on to the next step. 

8. If the drive is attached through a port replicator, go to 
the service manual of the port replicator to isolate the 
problem. 

9. If no error occurs when you test the formatted 
diskette, suspect the diskette that the customer used 
when reporting the problem. 



26 IBM ThinkPad 380XD, 385XD 



Fan Checkout 

To check the fan, listen for the fan. If you cannot hear it 
running at power-on, replace the fan. If you can hear it 
running but not steadily, do the diagnostic test. 

1 . Start Easy-Setup. 

2. Click on Test. 

3. Press Ctrl+A to enter the advanced diagnostic mode. 
The ThinkPad Connection windows appear. 

4. Click on Exit. The keyboard layout appears on the 
screen. 

5. Click on Exit. 

6. Click on System Board then press Enter to run the 
test. 

Follow the instructions that appear on the screen. If 
the test detects a fan problem, replace it. 

Keyboard or Auxiliary Input Device 
Checkout 

Remove any external keyboard before testing the built-in 
keyboard. 

If the keyboard does not work or an unexpected character 
appears, make sure that the flexible cable extending from 
the keyboard is correctly seated in the connector on the 
DC/DC card. 

If the keyboard cable connection is correct, check the 
DC/DC card. 

If the tests do not detect a keyboard problem, run the 
keyboard test by doing the following: 

1 . Go to the diagnostic menu by selecting Test in the 
Easy-Setup menu. 

2. Press Ctrl+A to enter to the advanced diagnostic 
mode. 

The ThinkPad FRU Connections window appears. (If 
Ctrl+A does not work, triple-click on the icon on the 
right bottom corner of the basic diagnostic window.) 

3. Make sure that the keyboard connection is 
Connected; then press Esc to exit the screen. 
A layout of the keyboard appears on the screen. 

4. Check that when each key is pressed, the key's 
position on the keyboard layout on the screen 
changes to a black square. 

Note: When the Fn key is pressed, a black square 
appears briefly. 

5. Press Ctrl+Pause to end the test. 

If the tests detect a keyboard problem, do the following 

one at a time: 

Warning: Do not replace a nondefective FRU. 

• Reseat the keyboard cables. 

• Replace the DC/DC card. 

IBM ThinkPad 380XD, 385XD (2635) 27 



• Replace the system board. 

Auxiliary Input Devices: The following auxiliary 
input devices are supported: 

• Numeric keypad 

• Mouse (PS/2 compatible) 

• External keyboard (with keyboard/mouse cable) 

If any of these devices do not work, reseat the cable 
connector and repeat the failing operation. 

If the problem remains, replace the device, and then the 
system board. 

Memory Checkout 

DIMMs are available for increasing memory capacity. 



DIMM 


Displayed Value 


No DIMM installed 


32192 KB 


8MB 


40384 KB 


16 MB 


48576 KB 


32 MB 


64960 KB 


64 MB 


97728 KB 



Memory errors may cause error messages to appear on 
the screen or may hang the operating system. 

Take the following procedure to isolate memory problems: 

1 . Turn off the computer and remove any installed DIMM 
from the slot. 

2. Press and hold the F1 key; then turn on the 
computer. Hold the F1 key down until the 
Easy-Setup menu appears. 

3. Select Test and press Enter. 

4. Select Memory and press Enter to run the memory 
test for the base memory. If an error appears, 
replace the system board. 

5. Turn off the computer and reinstall the DIMM; then 
turn on the computer. Verify the memory size; then 
test the memory. If an error message appears, 
replace the DIMM. 

If a memory problem occur intermittently, perform the loop 
option test. If the test detects an error, it prints an error 
log on a printer connected to the parallel port. See 
"Displaying the Error Log" on page 50 for more 
information. 

Flash Memory Update: System setup programs and 
diagnostic tests are stored in the flash memory. A flash 
memory update is required when: 

• A new version of the system program is installed. 

• A new features or options is added to the computer. 

28 IBM ThinkPad 380XD, 385XD 



To update the flash memory, do the following: 

1. Obtain an appropriate diskette containing the update. 

2. Insert the System Program Service diskette into drive 
A, and turn on the computer with ac power or a fully 
charged battery. 

3. Select Update system programs from the menu. 

Power Systems Checkout 

To determine whether a power systems problem is due to 
the AC Adapter or the battery, do the following: 

1 . Remove the battery. 

2. Connect the AC Adapter and check that power is 
supplied. 

3. Disconnect the AC Adapter and install the charged 
battery; then check that power is supplied by the 
battery. 

• If the problem is due to the AC Adapter, go to "AC 
Adapter Checkout" 

• If the problem is due to the battery, go to "Battery 
Checkout" on page 30 

If the problem is not due to the AC Adapter or the 
battery, go to "Backup Battery Checkout 
(Nonrechargeable)" on page 31 

AC Adapter Checkout: This checkout is used only 
when the computer fails under ac power. 

• If the problem occurs only when the AC Adapter is 
used with a port replicator, replace the replicator. 

• If the power-on indicator does not turn on, check the 
power cord of the AC Adapter for conductivity and 
installation. 

1. Unplug the AC Adapter cable from the computer and 
measure the output voltage at the cable plug. See 
the following figure: 




Pin 


Voltage (V dc) 


1 


+15.5 to +17.0 


2 


Ground 



a. If the voltage persists, go to the next step. 

b. If the voltage is correct, make sure the 
connection between the DC/DC card and the 
system board is not loose. 



IBM ThinkPad 380XD, 385XD (2635) 29 



c. Replace the DC/DC card. 

d. If the problem is not corrected, replace the 
system board. 

e. If the problem persists, go to "Undetermined 
Problems" on page 48. 

2. Unplug the AC Adapter cable from the ac power 
outlet and wait 5 minutes or longer to allow the 
overvoltage protection circuit to be fully discharged 
and initialized. 

3. Plug the AC Adapter cable into the ac power outlet. 

4. Measure the output voltage of the AC Adapter. 

5. If the voltage is still not correct, replace the AC 
Adapter. 

Note: An audible noise from the AC Adapter does not 
always indicate a defect. 



If the error is due to the battery, 



Battery Checkout: 

do the following: 

1 . Turn off the computer. 

2. Remove the battery and measure the voltage 
between the battery terminals 1 (+) and 4 (-). 




Terminal 


Voltage (V dc) / Signal 


1 


+0 to +13.5 


4 


Ground (-) 



Note: Signal lines not used in these steps are used 
for communication between the system and 
the battery. 

If the voltage is less than +1 1 .0 V dc, the battery has 
been discharged. Recharge the battery. 

If the voltage is still less than +1 1 .0 V dc after 
recharging, replace the battery. 

Note: The voltage of the battery could show V 
because of the overdischarge protection 
circuit. Try to trickle charge the battery by 
attaching it to the computer with the AC 
adapter. 



30 IBM ThinkPad 380XD, 385XD 



4. If the voltage is more than +11.0 V dc, measure the 
resistance between the battery terminals 3 and 4. 
The resistance must be 4 to 30 K ohms. 

If the resistance is not correct, replace the battery. 

If the resistance is correct, replace the DC/DC card. 

Checking Operational Charging 

— Note 



Battery charging will not start unless the Fuel-Gauge 
is below 95%. At below 95%, the battery will start 
charging to 100% of its capacity. This limitation 
protects the battery from overcharging and also 
prolongs its life. 



To check the operational charging, install a fully 
discharged battery or a battery that is less than 50% 
charged. 

Turn on the computer while it is connected to the AC 
Adapter. If the battery status indicator does not turn on, 
turn off the computer, remove the battery, and let the 
battery return to room temperature. Reinstall the battery, 
and turn on the computer (still connected to the AC 
Adapter). If the charge indicator still does not turn on, 
replace the battery. 

Backup Battery Checkout 
(Nonrechargeable) 

1 . Turn off the computer and unplug the AC Adapter 
from the computer. 

2. Open the Memory-slot cover. 

3. Remove the backup battery. (Refer to "1010 DIMM 
Card and Backup Battery" on page 62 to remove the 
battery.) 

4. Measure the voltage of the backup battery connector. 



Black(-) 




Red(+) 



Wire 


Voltage (V dc) 


Red 


+2.5 to +3.7 


Black 


Ground 



IBM ThinkPad 380XD, 385XD (2635) 31 



• If the voltage is correct, replace the system board. 

• If the voltage is not correct, the backup battery has 
been discharged. Replace the backup battery. 

• If the backup battery discharges quickly after 
replacement, replace the system board. 

Status Indicator Checkout 

If an LED problem occurs, do the following: 

1 . Turn off the computer. 

2. Turn on the computer. 

3. All the LEDs in the indicator panel should turn on for 
a moment soon after the computer is powered on. 
Make sure they turn on. 

If the problem persists, replace the system board. 

System Board and CPU Card Checkout 

The system board and the CPU Card FRUs perform the 
operation on the computer. Processor problems can be 
caused by either FRU. Generally, the CPU Card has a 
lower failure rate. If a numeric code indicates the system 
board or the CPU Card as failing, do the following 
procedure to isolate the problem: 

1. Run the system board test to verify the symptom. 
This test verifies both the system board and the CPU 
Card. If no error is detected, return to "Undetermined 
Problems" on page 48. 

Note: Do not touch the keyboard and the pointing 

device when the system board is being tested. 
This might cause unexpected errors. 

2. If FRU code 10 appears, replace the system board, 
but do not replace the CPU Card. Transfer the CPU 
Card from the old system board to the new system 
board. 

3. If FRU code 1 1 appears, reseat the CPU Card. 

4. Rerun the test to verify the fix. 

5. If FRU code 1 1 remains, replace the CPU Card. 

If this procedure does not correct the problem, go to 
"Undetermined Problems" on page 48. 

TrackPoint III Checkout 

If the TrackPoint III does not work, do the following: 

1. Run the ThinkPad Configration program and check if 
the configuration of the TrackPoint III is enabled. 

2. If it is not, select Enable and enable it. 

3. If you still have a problem, continue to the next step. 



32 IBM ThinkPad 380XD, 385XD 



Drifting Pointer 

There may be cases when the pointer drifts for a 
short while on the screen, this is not a hardware 
problem. This movement can occur when a 
slight, steady pressure is applied to the 
TrackPoint III pointer. No service action needs 
be taken. 



4. Go to the Easy-Setup menu. 

5. Move to an item with the pointing stick. 

6. Press any one of the two click buttons. 

7. Verify that the item is selected. 

8. Verify that all buttons work correctly. 

9. If the problem still persists, do the following one at a 
time: 

Warning: Do not replace a nondefective FRU. 

• Reseat the TrackPoint III cable. 

• Replace the keyboard. 

• Replace the DC/DC card. 

• Replace the system board. 

Optional Device Checkout 

If you suspect an optional device problem, do either of the 
following: 

• "Port Replicator Checkout" 

• "External Monitor Self-Test" 

Port Replicator Checkout 

Do the following procedures to isolate a port replicator 
problem. A port replicator attaches to the system 
expansion connector at the rear of the computer. 

1 . Turn off the computer. 

2. Remove the failing devices from the replicator. 

3. Unplug the AC adapter from the replicator, if 
attached. 

4. Remove the port replicator from the computer. 

5. Reconnect the failing device directly to the computer. 
(If another device is already connected to the 
computer, remove it first.) 

6. Go to the "Running the Diagnostics" on page 49 and 
run the diagnostics. 

7. If the advanced diagnostic device test does not find 
an error, suspect a problem with the port replicator of 
the system expansion bus. 

8. Turn off the computer and reconnect the port 
replicator. 

9. Turn on the computer and run the following advanced 
diagnostic tests: 

• Serial port test with the wrap plug installed on 
the replicator 



IBM ThinkPad 380XD, 385XD (2635) 33 



• Parallel port test with the wrap plug installed on 
the replicator 

10. If diagnostic errors appear, replace the replicator or 
diskette drive attachment unit. 

If the problem remains after the replacement, replace 
the system board. 

11. If power problems appear only when the replicator is 
used, replace the replicator. 

External Monitor Self- Test 

If a monitor problem occurs only when an external monitor 
is connected, do the following: 

Note: Before you replace a monitor: 

• Check that the 95XX systems support either 
63XX, 85XX, or 95XX displays. 

• Make sure that the external monitor is 
properly connected to the computer. 

If the screen is rolling, replace the external monitor. If that 
does not correct the problem, replace the FRUs in the 
following order: 

1 . System board 

2. Bus adapter (if used) 

If the screen is not rolling, run the monitor self-test as 
follows: 

1. Power-off the computer and monitor. 

2. Disconnect the monitor signal cable. 

3. Power-on the monitor 

4. Set the contrast to its maximum position. 

5. Set the brightness control to the center detent 
position. 

Check the following conditions: 

• The screen contrast and brightness control are 
adjustable. 

• The screen is either white or light gray, with a black 
margin (test margin). 

• The screen is set to CRT or both on the ThinkPad 
Configration program. 

Note: The location of the test margin may vary with 
the type of monitor. It can be either at the top 
and/or bottom, or left and/or right of the 
screen. 

If you do not see a test margin on the screen, replace the 
monitor. If there is a test margin on the screen, replace 
the system board. 



34 IBM ThinkPad 380XD, 385XD 



Power Management Features 

Three power management modes are provided by the 
computer to reduce power consumption and to prolong 
battery life. 

Standby Mode: In standby mode, the following 
occurs: 

• The LCD backlight turns off. 

• The hard disk drive motor stops. 

The following events cause the computer to enter standby 
mode: 

• Standby is requested by the Fn key (Fn+F3). 

• There is inactivity under auto-standby mode set by 
the ThinkPad Configration program. 

The computer exits standby mode and resumes operation 
when any key is pressed. 

Suspend Mode: In suspend mode, the following 
occurs: 

The LCD backlight turns off. 
The hard disk drive motor stops. 
The LCD is powered off. 
The hard disk drive is powered off. 
The CPU stops. 

The following events cause the computer to enter suspend 
mode: 

• Suspend mode is requested by the Fn key (Fn+F4). 

• The LCD is closed. 

• A time-out occurred on the following devices: 

- Keyboard 

- TrackPoint III 

- Hard disk drive 

- Parallel connector 

- Diskette drive 

- AC Adapter 

The duration of inactivity is specified in Suspend 
Timer oi the ThinkPad Configration program. 

• The battery power is low and the orange battery 
power indicator blinks. 

• Either the PS2 OFF or the PS2 SUSpend command 
is set in the ThinkPad Configration program. 



IBM ThinkPad 380XD, 385XD (2635) 35 



Notes: 

1 . To disable suspend mode, set the mode to "Will 
not suspend even if LCD is closed." in the 
ThinkPad Configration program. 

2. If the computer is being powered by ac power 
and a communication PC Card is being used, the 
computer enters standby mode instead of 
entering the normal suspend mode, and the PC 
Card and application programs remain active. 

3. The computer will not enter suspend mode when 
a communication link is active. 



The following events cause the computer to return from 
suspend mode to normal operation: 

• The LCD is opened. 

• The real time clock alarm is signaled. 

• The ring indicator (Rl) is signaled by a serial device 
or a PC Card device. 

• The Fn key is pressed. 

• An external keyboard key is pressed while the 
computer is operating with ac power. 

The computer exits suspend mode and enters hibernation 
mode when a preset timer condition is satisfied. 

Hibernation Mode: In hibernation mode, the 
following occurs: 

• The system status, RAM, VRAM, and setup data are 
stored on the hard disk. 

• The computer is powered off. 



Notes: 

The computer cannot enter hibernation mode if it is 
being powered by ac power and a communication PC 
Card is used. 



The following events cause the computer to enter 
hibernation mode: 

• Hibernation mode is requested by the Fn key 
(Fn+F12). 

• Timer conditions are satisfied in suspend mode. 

• A critically low battery condition occurs. 

• The PS2 HIBernation command is set in the 
ThinkPad Configration program. 

The computer exits hibernation mode and resumes 
operation when the power-on switch is pressed. When 
power is turned on, the hibernation file in the boot record 
on the hard disk drive is read and system status is 
restored from the hard disk drive. 



36 IBM ThinkPad 380XD, 385XD 



Port Replicator Power Overload: if a power 
shutdown occurs intermittently when PC Card devices are 
used with a port replicator, suspect an over-current 
problem. Some PC Card devices use much power, and if 
at some point the required power exceeds the allowed 
power, a power shutdown occurs. Isolate this problem to a 
device by removing each device simultaneously and then 
using the computer under the same condition as when the 
power shutdown occurred. This will determine which 
device is causing the overload. 



IBM ThinkPad 380XD, 385XD (2635) 37 



Symptom-to-FRU Index 

The Symptom-to-FRU Index lists the symptoms and errors 
and the possible causes. The most likely cause is listed 
first. 

Note: Perform the FRU replacement or actions in the 

sequence shown in the "FRU/Action" columns. If a 
FRU replacement did not solve the problem, put 
the original part back in the computer. Do not 
replace a nondefective FRU. 

This index can also help you determine the next possible 
FRUs to be replaced when servicing a computer. 

Numeric error codes show the errors detected in POST or 
system operation. In the following error codes, X can be 
any number. 

If no codes are available, use narrative symptoms. 

If the symptom is not listed, go to "Undetermined 
Problems" on page 48. 



Note: For IBM devices not supported by diagnostic 
codes in the ThinkPad notebook computers, 
see the manual for that device. 



Numeric Error Codes 



Symptom / Error 


FRU / Action in Sequence 


10X 


System board 


101: Interrupt failure. 




102: Timer failure. 




103: Timer interrupt 




failure. 




104: Protected mode 




failure. 




105: Last 8042 




command not 




accepted. 




107: NMI test failure. 




108: Timer bus test 




failure. 




109: Low meg-chip 




select test. 




110 


1. Go to "Memory 


(Planar parity.) 


Checkout" on 




page 28. 




2. DIMM 




3. Detach the expansion 




unit if it is attached to 




the computer. 




4. System board 



38 IBM ThinkPad 380XD, 385XD 



Symptom / Error 


FRU / Action in Sequence 


111 

(I/O parity.) 


1. Go to "Memory 
Checkout" on 
page 28. 

2. Port replicator 

3. System board 


158 

(Hard disk password is not 
set even though the 
supervisor password is set.) 


Set the password for hard 
disk drive. 


159 

(Hard disk password is not 
set the same as the 
supervisor password.) 


Set the correct password 
for hard disk drive. 


161 

(Dead battery.) 


1. Go to "Backup 
Battery Checkout 
(Nonrechargeable)" 
on page 31. 

2. Backup battery 

3. System board 


163 

(Time and date were not 
set.) 


1 . Set time and date. 

2. System board 


173 

(Configuration data was 
lost.) 


1 . Select OK in the error 
screen; then set the 
time and date. 

2. Backup battery 

3. System board 


174 

(Configuration error: 
PerfornrT'Checking the 
Installed Devices List" on 
page 50 before changing 
any FRUs.) 


1 . Check device 
configuration. 

2. Hard disk drive 

3. System board 


175, 177, 178 

175: EEPROM CRC 

#1 error. 

177: Supervisor 

password check sum 

error. 

178: EEPROM is not 

functional. 


System board 


183 

(Incorrect password entered 
at the supervisor password 
prompt.) 


Have the user examine 
the password. 


184 

(Power-on password check 
sum error.) 


Reset the power-on 
password in Easy-Setup. 


185 

(The start-up sequence is 
not valid. Probably the 
computer was powered off 
when the start-up sequence 
was being updated.) 


Reset the start-up 
sequence in Easy-Setup. 



IBM ThinkPad 380XD, 385XD (2635) 39 



Symptom / Error 


FRU / Action in Sequence 


186 


System Board 


190 

(A depleted battery pack 
was installed when the 


Go to "Battery Checkout" 
on page 30. 


power was on.) 




191 XX 

(PM initialization error.) 


System board 


192 

(Fan error) 


1. Fan 

2. System board 


195 

(The configuration read from 
the hibernation data storage 
area does not match the 
actual configuration.) 


Check if the configuration 
was changed. 

For example, check if the 
DIMM is added. 


196 

(A read error occurred in the 
hibernation area of the hard 
disk drive.) 


1. Run the hard disk 
drive test. 

2. Hard disk drive 


199XX 

(Resume error.) 


System board 


1XX 


System board 


225 

(Unsupported memory 
module) 


1 . Check if a supported 
DIMM is installed. 

2. DIMM Card 

3. System board 


2XX 

201 : Memory data 

error. 

202: Memory line error 

00-15. 


1. Go to "Memory 
Checkout" on 
page 28. 

2. DIMM 

3. System board 


203: Memory line error 

16-23. 

205: Memory test 

failure on on-board 




memory. 

221 : ROM to RAM 




remap error. 




301,303, 304, 305, 3XX 

(301 : Keyboard error.) 


1 . Go to "Keyboard or 
Auxiliary Input 
Device Checkout" on 




page 27. 

2. Keyboard 

3. External numeric 
keypad 

4. External keyboard 

5. Keyboard/mouse cable 

6. DC/DC card 

7. System board 



40 IBM ThinkPad 380XD, 385XD 



Symptom / Error 


FRU / Action in Sequence 


601, 6XX 

(601: Diskette drive or 
controller error.) 


1 . Go to "Diskette Drive 
Checkout" on 

page 26. 

2. CD-ROM and FDD 
assembly 

3. Diskette 

4. System board 


602 

(Diskette read error.) 


1 . Go to "Diskette Drive 
Checkout" on 

page 26. 

2. Diskette 

3. CD-ROM and FDD 
assembly 


604 

(An unacceptable ID was 
read from the diskette 
drive.) 


1 . Go to "Diskette Drive 
Checkout" on 

page 26. 

2. CD-ROM and FDD 
assembly 

3. System board 


11XX 

1101: Serial_A test failure. 


1 . Serial device 

2. Communication cable 

3. System board 


12XX 

1201: SeriaLB test failure. 


1. System board 
(infrared) 


17XX 

1701: Hard disk 
controller failure. 

1780, 1790: Hard disk 

error. 

1781, 1791: Hard disk 

1 error. 


1. Hard disk drive 

2. System board 


24XX 

(2401 : System board video 
error.) 


System board 


808X 

8081: PCMCIA 
presence test failure. 
(PCMCIA revision 
number also checked.) 
8082: PCMCIA 
registration test failure. 


1 . PC Card slot 
assembly 

2. PCMCIA device 

3. System board 


860X 

(Pointing device error when 
TrackPoint III is disabled.) 

8601: System bus 

error-8042 mouse 

interface. 

8602: External mouse 

error. 

8603: System bus 

error or mouse error. 


1 . External mouse 

2. External keyboard 

3. System board 



IBM ThinkPad 380XD, 385XD (2635) 41 



Symptom / Error 


FRU / Action in Sequence 


861 X 


1. 


Reseat the keyboard 


(Pointing device error when 




cable on the DC/DC 


TrackPoint III is enabled.) 




card 


861 1 : System bus 
error-l/F between 8042 
and IPDC. 
8612: TrackPoint error. 


2. 
3. 
4. 
5. 


Keyboard 
External mouse 
DC/DC card 
System board 


8613: System board or 






TrackPoint error. 






19990301 


1. 


Check that the 


I9990302 




operating system is 


I9990305 




installed in the hard 


19990301 : Hard disk 
error. 




disk drive. If not, 
install the operating 


I9990302: Invalid hard 
disk boot record. 


2. 


system. 

Reseat the boot 


I9990305: No bootable 
device. 


3. 


device. 

Check the start-up 
sequence for the 
correct boot device. 




4. 


Check that the 
operating system boots 
correctly. 


I9990303 


System board 


(Bank-2 flash ROM check 






sum error.) 






Other codes not listed 


Go to "Undetermined 


above. 


Problems" on page 48. 



42 IBM ThinkPad 380XD, 385XD 



Beep Symptoms 



Symptom / Error 


FRU / Action in Sequence 


Continuous beeps. 


System board 


One beep and a blank, 
unreadable, or flashing 
LCD. 


1 . Reseat the LCD 
connector 

2. LCD assembly 

3. System board 


One beep, and the message 
"Unable to access boot 
source" appears. 


1 . Boot device 

2. System board 


One long and two short 
beeps, and a blank or an 
unreadable LCD. 


1. System board 

2. LCD assembly 


One long beep followed by 

four short beeps each time 

the power switch is 

operated. 

(System cannot turn on due 

to low battery voltage.) 


Connect the AC Adapter 
or install a fully charged 
battery. 


One beep every second. 
(System is shutting down 
due to low battery voltage.) 


Connect the AC Adapter 
or install a fully charged 
battery. (Allow the 
system to completely shut 
down before changing the 
battery.) 


Two short beeps with error 
codes. 


POST error. See 
"Numeric Error Codes" on 
page 38. 


Two short beeps and a 
blank screen. 


System board 



No Beep Symptoms 



Symptom / Error 


FRU / Action in Sequence 


No beep, power-on indicator 
not on, and a blank LCD 
during POST. 


1 . Go to "Power 
Systems Checkout" 
on page 29. 

2. DC/DC card 

3. System board 

4. CPU Card 

5. Check the power outlet 


No beep, power-on indicator 
on, and a blank LCD during 
POST. 


1 . DC/DC card 

2. System board 

3. CPU Card 


No beep, power-on indicator 
on, and a blinking cursor 
only during POST. 


1 . DC/DC card 

2. CPU Card 

3. System board 


No beep during POST but 
the system runs correctly. 


1. Turn the volume up 
and check the 
speaker. 

2. Speaker 

3. System board 



IBM ThinkPad 380XD, 385XD (2635) 43 



Function-Related Symptoms 



Symptom / Error 


FRU / Action in Sequence 


The system does not 
suspend or resume when 
the LCD is closed or 
opened. 


1. Go to "Suspend 
Mode" on page 35, 
and check that the 
computer can enter 
suspend mode. 

2. Boot an operating 
system and press 
Fn+F4. If the 
computer enters 
suspend mode, 
suspect that the 
application program is 
not working properly. 

3. LCD assembly 

4. System board 


The battery Fuel-Gauge 
does not go higher than 
90%. 


Go to "Battery Checkout" 
on page 30 and see the 
note. 


The memory count (size) 
appears different from the 
actual size. 


Go to "Memory Checkout" 
on page 28. 


The system configuration 
does not match the installed 
devices. 


Go to "Checking the 
Installed Devices List" on 
page 50. 


The system hangs 
intermittently. 


Go to "Intermittent 
Problems" on page 47. 



Indicator-Related Symptoms 



Symptom / Error 


FRU / Action in Sequence 


The indicator incorrectly 
remains off or on, but the 
system runs correctly. 


1. System board 

2. DC/DC card 


The battery power status 
indicator blinks from green, 
yellow, to orange. 


1 . Check that a correct 
battery is installed. 

2. Battery pack 

3. DC/DC card 

4. System board 


The battery indicator does 
not turn on when the battery 
is installed. 


1 . DC/DC card 

2. Battery pack 

3. System board 



44 IBM ThinkPad 380XD, 385XD 



Infrared-Related Symptoms 



Symptom / Error 


FRU / Action in Sequence 


Unable to communicate 
using the Infrared (IR) Port. 


1 . Make sure the setup 
for the IR is correct. 

Use the ThinkPad 
Configurations utility. 

2. Make sure there are 
no fluorescent lights 
near the computer. 
The computer may 
receive optical noise 
from the fluorescent 
light. 

3. Run the advanced 
diagnostic test. If an 
error occurs and a 
FRU code is displayed, 
replace the parts 
shown by the FRU 
code. 



Keyboard- or TrackPoint 
Symptoms 



-Related 



Symptom / Error 


FRU / Action in Sequence 


The keyboard (one or more 
keys) does not work. 


1 . Reseat the keyboard 
cable on the DC/DC 
card. 

2. Keyboard 

3. System board 


The TrackPoint III does not 
work. 


1 . Reseat the keyboard 
cable on the DC/DC 
card. 

2. Go to "TrackPoint III 
Checkout" on page 32. 

3. Keyboard 

4. System board 


The pointer moves 
automatically or does not 
work correctly. 


See "TrackPoint III 
Checkout" on page 32. 



IBM ThinkPad 380XD, 385XD (2635) 45 



LCD-Related Symptoms 

— Important 



The TFT LCD for the notebook computer contains 
over 921 ,000 thin-film transistors (TFTs). A small 
number of missing, discolored, or lighted dots (on all 
the time) is characteristic of TFT LCD technology, but 
excessive pixel problems can cause viewing concerns. 
The LCD should be replaced if the number of missing, 
discolored, or lighted dots in any background is 21 or 
more. 



Symptom / Error 


FRU / Action in Sequence 


No beep, power-on indicator 


1. 


Reseat the CPU Card 


on, and a blank LCD during 


2. 


DC/DC card 


POST. 


3. 


System board 


1 . LCD backlight not 


1. 


Reseat the LCD 


working. 




connectors. 


2. LCD too dark. 


2. 


LCD assembly 


3. LCD brightness cannot 


3. 


System board 


be adjusted. 






4. LCD contrast cannot 






be adjusted. 






1 . The LCD screen is 


1. 


See important note 


unreadable. 




for "LCD-Related 


2. Some pels missing in 




Symptoms." 


characters. 


2. 


Reseat all LCD 


3. The screen is 




connectors. 


abnormal. 


3. 


LCD assembly 


4. Wrong color displayed. 


4. 


System board 


LCD has extra horizontal or 


LCD assembly 


vertical lines displayed. 







Peripheral-Device-Related Symptoms 



Symptom / Error 


FRU / Action in Sequence 


The external monitor does 
not work correctly. 


Connect the external 
monitor to another PC. If 
the monitor works fine, 
replace the system board. 
If not, replace the external 
monitor. 


Printer problems. 


1. Run printer self-test. 

2. Parallel port wrap test. 

3. System board 

4. Printer cable 

(See the printer manual for 
the above tests.) 



46 IBM ThinkPad 380XD, 385XD 



Symptom / Error 


FRU / Action in Sequence 


Serial or parallel port device 


1. Run serial or parallel 


problems. 


port wrap test. (See 




the device manual for 




the test.) 




2. Device 




3. System board 




4. Device cable 



Power-Related Symptoms 



Symptom / Error 


FRU / Action in Sequence 


Power shuts down during 
operation. 


1 . Go to "Power 
Systems Checkout" 
on page 29. 

2. Battery pack 

3. Remove the battery 
pack and let it cool for 
2 hours. 

4. DC/DC card 

5. System board 

6. Check the power 
outlet. 


The system does not power 

off. 

(See "Power Shutdown 

Switch" on page 22.) 


1 . Press the power 
shutdown switch. 

2. DC/DC card 

3. System board 



Other Symptoms 



Symptom / Error 


FRU / Action in Sequence 


Errors occur only when the 
port replicator is used. 


See "Port Replicator 
Checkout" on page 33. 


PC Card slot pin is 
damaged. 


PC Card slots assembly. 



Note: If you cannot find a symptom or an error in this list 
and the problem remains, see "Undetermined 
Problems" on page 48. 

Intermittent Problems 

Intermittent system hang problems can be caused by a 
variety of reasons that have nothing to do with a hardware 
defect, such as: cosmic radiation, electrostatic discharge, 
or software errors. FRU replacement should be 
considered only when a recurring problem exists. 

When analyzing the intermittent problem, do the following: 

1 . Run the advanced diagnostic test for the system 
board in loop mode at least 10 times. 

2. If no error is detected, do not replace any FRUs. 



IBM ThinkPad 380XD, 385XD (2635) 47 



3. If any error is detected, replace the FRU shown by 
the FRU code. Rerun the test to verify that no more 
errors exist. 

Undetermined Problems 

You are here because the diagnostic tests did not identify 
which adapter or device failed, installed devices are 
incorrect, a short circuit is suspected, or the system is 
inoperative. Follow these procedures to isolate the failing 
FRU (do not isolate nondefective FRUs). 

Verify that all attached devices are supported by the 
computer. 

Verify that the power supply being used at the time of the 
failure is operating correctly. (See "Power Systems 
Checkout" on page 29): 

1 . Turn off the computer. 

2. Visually check them for damages. If any problems 
are found, replace the FRU. 

3. Remove or disconnect all of the following devices: 

a. Non-IBM devices 

b. Devices attached to the port replicator 

c. Printer, mouse, and other external devices 

d. Battery pack 

e. Hard disk drive 

f. CD-ROM and FDD 

g. DIMM 

h. PC Cards 

4. Turn on the computer. 

5. Determine if the problem is solved. 

6. If the problem is solved, reconnect the removed 
devices one at a time until you find the failing FRU. 

7. If the problem remains, replace the following FRUs 
one at a time. Do not replace a nondefective FRU. 

a. System board 

b. DC/DC card 

c. LCD assembly 

d. CPU Card 



48 IBM ThinkPad 380XD, 385XD 



Running the Diagnostics 

Use either TrackPoint III or the cursor move keys to 
interact with the tests. 

The following table lists the special tools used in the 
diagnostics: 



Tool Name 


Part Number 


PC test card 


35G4703 


Tri-Connector wrap plug 


72X8546 


USB parallel test cable 


05K2580 



Use either TrackPoint III or the cursor move keys to 
interact with the tests. The Enter key works in the same 
way as when selecting the OK icon to reply OK. 

1. Press and hold F1; then turn on the computer. Hold 
F1 down until the Easy-Setup menu appears. 

2. Click on Test. The basic diagnostic menu appears. 

3. Click on a device to run the test. The test progress 
window appears; then OK appears under the tested 
device icon when the test ends without any errors. 

4. Start the Advanced Diagnostic test by pressing 
Ctrl+A on the basic diagnostic menu. The ThinkPad 
FRU connections window appears. 

5. Click on Exit or press the Esc key. The keyboard 
test window appears. 

6. When you press a key, a mark appears or disappears 
on the corresponding key position on the screen. 
Repeat this step for any key that needs to be tested. 
You can run the keyboard test if you press the Ctrl+K 
keys at the advanced diagnostic menu. 

7. To exit the keyboard test, click on Exit or press the 
Ctrl+Break keys. The Advanced Diagnostics menu 
appears. 



IBM ThinkPad 380XD, 385XD (2635) 49 



8. Click on a device to test, or click on Test All to test 
all devices. 

Click on Looptest to run the tests in a repeated loop. 
The loop option menu appears. Click on a device; a 
V mark appears beside the selected device. Repeat 
this step to select multiple devices. Click on OK to 
start the diagnostic loop. If no device is selected, all 
devices tests are looped. 

9. To exit the loop, keep pressing Ctrl+Pause. A beep 
sounds to notify that exit interrupt is sensed by the 
test program. Press Esc to exit from the loop test. 

PC Card (PCMCIA) Slots Test 

The green LED on the PC test card (P/N 35G4703) turns 
on when the PC Card (PCMCIA) slot test is running. If the 
LED does not turn on, check that the card is installed 
correctly by reseating it. If the LED still does not turn on 
after the card is reseated, try using another slot for the 
test. If the LED still does not turn on and the test fails, 
replace the FRU shown by the diagnostic error code. 

Universal Serial Bus (USB) Test 

At the advanced diagnostic test menu, connect the USB 
parallel test cable (P/N 05K2580) to the computer. Click 
on the USB icon to run the test. Follow the instructions on 
the screen. OK appears if the test passes and three lines 
of error codes appear if the test fails. The defective FRU 
must be the DC/DC card or the system board. 

Use cable number 2 for an external USB port on the port 
replicator. 

Displaying the Error Log 

Diagnostic errors are printed on a printer that is attached 
to the parallel port when the error is detected. The error is 
also logged in the system memory. 

Use the following procedures to display the errors: 

1. Enter the advanced diagnostic test. 

2. Press Ctrl+E. 

3. The error log appears. 

4. To exit the window, click on Exit or press Esc key. 

The error log is not saved when the system power is 
turned off. 

Checking the Installed Devices List 

If a device is installed but its icon appears in gray shade 
rather than in dark shade on the basic diagnostics test 
menu, the device is defective. Reseat the device 
connectors. If the symptom remains, replace the device or 
the system board. If needed, adjust the contrast control to 
clearly distinguish the shades of the icon. 



50 IBM ThinkPad 380XD, 385XD 



If a device that is not installed appears in dark shade (for 
example, FDD-2 appears in dark shade when no second 
FDD is installed), do the following: 

1. Replace the first device in the configuration, such as 
an FDD-1. 

2. If the problem persists, replace the system board. 

The Parallel, and Serial icons are always displayed in dark 
shade, because the icons represent subsystems of the 
system board, not the attachment of devices. 

The FDD-1 icon represents the first drive in the system 
configuration for each type of device. The FDD-2 icon 
represents the second drive, attached through a port 
replicator. 



IBM ThinkPad 380XD, 385XD (2635) 51 



Diagnostic Error Codes 

If an error is detected, the following appears: 

• Large X on the left side of the device icon. 

• Device ID (three digits) 

• Error code (two digits) 

• FRU code (four digits) 

For example: 

Xm 
I o] 

System Board 
DEV 001 
ERR 02 
FRU 0010 



The device ID and error code indicate the detailed portion 
of the FRU that caused the error. If replacing a FRU does 
not correct the problem, see the device ID or error code 
from the previous failure. If they changed, the new FRU 
might be defective, or it may have been incorrectly 
installed. 

Device ID: If an error is detected by the diagnostic 
tests, a three-digit device ID is displayed, indicating the 
suspected device. 



Icon 


Device 
ID 


Suspected Device 


H 

SystemBoard 


001 


System board 


003 


Keyboard 


007 


Math coprocessor 


086 


Pointing device 


o 

Memory 


002 


Memory 


[ 


□ 
)ispla 


y 


050 


Display 


054 



HDD 


017 


Hard disk drive 


1 
FDD-1 


006 


Built-in FDD 


2 

FDD-2 


066 


1 . External diskette drive 

2. FDD connector of the 
port replicator 


PCMCIA-1 


080 


1. PC card slot connector 

2. PC Card 



52 IBM ThinkPad 380XD, 385XD 



Icon 


Device 
ID 


Suspected Device 


PCMCIA-2 


088 


External PC Card 


a 

Parallel 


009 


Parallel 


Serial 


011 


Serial 


® 
CDROM 


215 


CD-ROM 


Infrared 


103 


IR 


Audio 


153 


Audio (Crystal) 


J- 1 
USB-1 


154 


USB port 


USB-2 


155 


USB port of the port 
replicator 



FRU Codes: If an error is detected by the diagnostic 
tests, a four-digit FRU code is displayed. The FRU code 
indicates two suspected FRUs. Replace the FRU that is 
indicated by the two leftmost digits first; then replace the 
FRU that is indicated by the two rightmost digits. No 
FRU is assigned to code 00. If only one FRU is 
suspected, the other FRU code digits are filled with zeros. 
See the reference page before replacing the FRU. 



FRU Code 


FRU 


10 


System board 


11 


CPU Card 


12 


DC/DC card 


20 


Memory (see "Memory Checkout" on 
page 28) 


30 


Reserved 


32 


External keyboard 


33 


External mouse 


34 


AC Adapter 



IBM ThinkPad 380XD, 385XD (2635) 53 



FRU Code 


FRU 


35 


Speaker 


36 


Battery in the battery bay 


38 


Fan 


40 


LCD unit 


45 


External monitor 


50 


1. Reseat the diskette drive (FDD-1). 

2. Reseat the external FDD cable on the 
video card. 

3. Diskette drive (FDD-1) 


51 


1 . Reseat the diskette drive (FDD-2). 

2. Diskette drive (FDD-2) 


60 


1 . Reseat the hard disk drive (HDD). 

2. Hard disk drive (HDD) 


70 


PCMCIA-2 (replicator) 


72 


1 . Reseat the PC card slot assembly 

2. PC Card slot assembly 


73 


Port replicator 



Note: The device ID and error codes are used to indicate 
the detailed portion of the FRU that is causing the 
error. If replacing a FRU does not correct the 
problem, see the device ID or error code from the 
previous failure. If they changed, the new FRU 
might be defective, or it may have been incorrectly 
installed. 

If the problem persists even after the FRUs are replaced, 
go to "Undetermined Problems" on page 48. 



54 IBM ThinkPad 380XD, 385XD 



Related Service Procedures 

This section provides information on the following: 

"Status Indicators" 

"Password Combinations" on page 56 
"Running a Low-Level Format" on page 57 
"Maintenance Diskette Download" on page 57 
"Fn Key Combinations" on page 57 

Status Indicators 

The status indicators show the current computer status in 
different colors (green and orange): 




IBM ThinkPad 380XD, 385XD (2635) 55 



Symbol 


Color 


Meaning 


Q Battery 


Green 


The battery is 
fully charged. 


Orange 


The battery is 
charging. 


Blinking orange 


The battery 
needs charging. 


13 Hard Disk In 
Use 


Orange 


Data is read 
from or written to 
the hard disk, 
diskette, or 
CD-ROM. 


Q Numeric Lock 


Green 


The numeric 
keypad on the 
keyboard is 
enabled. 


Q Caps Lock 


Green 


Caps Lock mode 
is enabled. 


13 Scroll Lock 


Green 


Arrow keys can 
be used as 
screen-scroll 
function keys. 


Q Suspend 
Mode 

© 


Green 


Suspend mode 


Blinking Green 


Entering 
suspend mode 
or hibernation 
mode, or reusing 
normal 
operation. 


Q Power On 

© 


Green 


Power on 



Password Combinations 

The Model 380XD or 385XD supports the following 
passwords: 

• Power-on password (POP) 

• Hard disk password (HDP) 

• Supervisor password (PAP) 

The password combinations are: 

• When the POP is the same as one of the HDPs 
(HDP-1 or HDP-2), a POP prompt and an HDP 
prompt with different passwords appear. 

• When the POP is not the same as any of the 

• When the PAP is used, the HDP-1 or the HDP-2 is 
automatically enabled but the HDP prompt does not 
appear. The HDP-1 and HDP-2 are then set to the 
same password as the PAP. 



56 IBM ThinkPad 380XD, 385XD 



Running a Low-Level Format 

Attention: Make sure the drive address to be formatted is 
correct. This procedure erases all information on the disk. 

Do the following to format the hard disk: 



Turn off the computer. 

Insert the ThinkPad Hardware Maintenance 

Diskette Ver 1.40 or later into diskette drive A and 

turn on the computer. 

Select Format the hard disk from the main menu. 

Select the drive from the menu. 

Follow the instructions on the screen. 



Maintenance Diskette Download 

You cannot get the maintenance diskette from the parts 

center, but you can download from the IBM internal web 

site. 

The following is the URL of the IBM internal Web site: 

http://pccbbs.raleigh.ibm.com/ 

Fn Key Combinations 

The following table shows the Fn key and function key 
combinations and their corresponding functions. 

The Fn key works independently from the operating 
system. The operating system obtains the status through 
the system management interface to control the system. 



Fn + 


Description 


F1 


Reserved 


F2 


Fuel-Gauge monitor on or off 


F3 


Standby mode invocation 


F4 


Suspend mode invocation 


F5 


Reserved 


F6 


Reserved 


F7 


Switching between the LCD and an external 
monitor 


F8 


Switching between the screen expansion is 
on and off (no symbol on the key) 


F9 


Reserved 


F10 


Reserved 


F11 


Switching the power management mode 
(High Performance, Automatic, and 
Customized) 


F12 


Hibernation invocation 



IBM ThinkPad 380XD, 385XD (2635) 57 



FRU Removals and Replacements 

This section contains information about removals and 
replacements. 

• Do not damage any FRUs. Only certified and trained 
personnel should service the computer. 

• The arrows in the "Removals and Replacements" 
section show the direction of movement to remove a 
FRU, or to turn a screw to release the FRU. The 
arrows are marked in numeric order, in square 
callouts, to show the correct sequence of removal. 

• When other FRUs must be removed before the failing 
FRU is removed, they are listed in that order. 

• To replace a FRU, reverse the removal procedure 
and follow any notes that pertain to replacement. 
See "Locations" for internal cable connections and 
arrangement information. 

• When replacing a FRU, use the correct screw size as 
shown in the procedures. 

Safety Notice 1 : Translation on page 5 

Before the computer is powered-on after FRU 
replacement, make sure all screws, springs, or other 
small parts, are in place and are not left loose inside 
the computer. Verify this by shaking the computer 
and listening for rattling sounds. Metallic parts or 
metal flakes can cause electrical short circuits. 



Safety Notice 4: Translation on page 8 

The lithium battery can cause a fire, explosion, or 
severe burn. Do not recharge it, remove its polarized 
connector, disassemble it, heat it above 100°C 
(212°F), incinerate it, or expose its cell contents to 
water. Dispose of the battery as required by local 
ordinances or regulations. Use only the battery in the 
appropriate parts listing. Use of an incorrect battery 
can result in ignition or explosion of the battery. 



Safety Notice 8: Translation on page 11 

Before removing any FRU, power-off the computer, 
unplug all power cords from electrical outlets, remove 
the battery pack, and then disconnect any 
interconnecting cables. 



Attention: The system board is sensitive to, and can be 
damaged by, electrostatic discharge. Establish personal 
grounding by touching a ground point with one hand before 
touching these units. Use an electrostatic discharge (ESD) 
strap (P/N 6405959) to establish personal grounding. 



58 IBM ThinkPad 380XD, 385XD 



Important Notice 



This machine uses special nylon-coated screws with the 
following characteristics: 

• They maintain tight connection. 

• They do not easily come loose, even with shock or 
vibration. 

But: 

• They need additional force to tighten. 

• They should not be reused. 

Do the following when you service this machine: 

• Keep the screw kit (P/N 12J0808) in your tool bag. 

• Always use new screws. 

• Use a torque screwdriver if you have one. 

Screw Tightening Information: Loose screws 

can cause a reliability problem. The IBM ThinkPad 
computer addresses this problem with nylon-coated 
screws. Tighten screws as follows: 

• Plastic to plastic 

Turn an additional 90 degrees after the screw head 
touches the surface of the plastic part: 
90 degrees more 




Plastic 



Logic card to plastic 

Turn an additional 180 degrees after the screw head 
touches the surface of the logic card: 
180 degrees more 




Logic Card 



Plastic 

Torque driver 

If you have a torque driver, refer to the "Torque" 
instructions with each step. 



IBM ThinkPad 380XD, 385XD (2635) 59 



FRU Service Procedure 

Review the following procedures before replacing any 
FRUs. 

Replacing the System Board: The eeprom on 
the system board contains the valid product data 
(VPD) — that is, a system unit serial number an a system 
board serial number. When you replace the system board, 
restore the system unit serial number using the Set 
system identification utility in the ThinkPad hardware 
maintenance diskette. The serial number label is attached 
to the computer. 

Note: Do not power off the computer while restoring the 
VPD. 



60 IBM ThinkPad 380XD, 385XD 



Removal Reference 

Refer to the following chart for the removal order: 



Ref. No. 


FRU 


Page No. 


1010 


DIMM Card and 
Backup Battery 


62 


1020 


Battery Pack 


63 


1030 


Hard Disk Drive 


64 


1040 


Keyboard Unit 


66 


1050 


Keyboard and 
Speaker 


69 


1060 


CD-ROM Drive 
and Diskette 
Drive Assembly 


71 


1070 


Diskette Drive 
and Diskette 
Drive Assembly 


72 


1080 


LCD Unit 


76 


1090 


Fan Assembly, 
CPU Card, and 
Thermal Rubber 


79 


1100 


Upper Shield 
Case 


82 


1110 


Box Speaker and 
Microphone 


83 


1120 


DC/DC Card 


85 


1130 


System Board 
and PC Card Slot 


87 


1140 


Battery Pack 
Latch 


90 


2010 


LCD Front Cover 


91 


2020 


LCD Panel 


93 


2030 


LCD Inverter 
Card 


97 


2040 


LCD Misc. Parts 


99 


2050 


LCD Cable 


103 



IBM ThinkPad 380XD, 385XD (2635) 61 



1010 DIMM Card and Backup Battery 



Safety Notice 4: Translation on page 8 

The lithium battery can cause a fire, explosion, or 
severe burn. Do not recharge it, remove its polarized 
connector, disassemble it, heat it above 100°C 
(212°F), incinerate it, or expose its cell contents to 
water. Dispose of the battery as required by local 
ordinances or regulations. Use only the battery in the 
appropriate parts listing. Use of an incorrect battery 
can result in ignition or explosion of the battery. 



Turn the computer upside down. 

El O El O dimm 

B Q : Backup battery 



Memory-slot cover 




When installing: 

When installing a new backup battery, place it 
where the old one was on the printed circuit board 
(system board) with double-sided adhesive tape. 



Step 


Size (Quantity) 


Torque 


B 


— 


3-4 kgcm 


Note: You can loosen the screw in step Q , but cannot 
remove it. 



62 IBM ThinkPad 380XD, 385XD 



1020 Battery Pack 



Q Turn the computer upside down. 

Pull up the battery pack lock Q , push it back Q , and 
then pull up the battery pack Q . 




IBM ThinkPad 380XD, 385XD (2635) 63 



1030 Hard Disk Drive 



Warning 

Do not drop or apply any shock to the hard disk 
drive. The hard disk drive is sensitive to physical 
shock. Incorrect handling can cause damage and 
permanent loss of data on the hard disk. Before 
removing the hard disk drive, have the user make a 
backup copy of all the information on the hard disk. 
Never remove the hard disk drive while the system is 
operating or is in suspend mode. 



Battery Pack (1020) 




64 IBM ThinkPad 380XD, 385XD 






Information on spacers 

The relation between the thickness of the HDD and 
the spacers is as follows: 






12.5 mm 


Spacer 




17 mm 


None 









Step 


Size (Quantity) 


Torque 


□ 


M 3 x 2.8 mm, Flathead (4) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 65 



1040 Keyboard Unit 

• Battery Pack (1020) 




Step 


Size (Quantity) 


Torque 


D 


M 2.5 x 25 mm, nylon-coated (1) 


3-4 kgcm 


U 


(a)M 2.5 x 8 mm, nylon-coated (3) 
(b)M 2.5 x 6 mm, nylon-coated (1) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



El Make sure that the battery pack lock is not sticking 
out, and turn the computer right side up. 




66 IBM ThinkPad 380XD, 385XD 



Note: In order not to damage the connectors, pull the 
keyboard assembly toward you a little in step [ 
and then go to step Q . 




IBM ThinkPad 380XD, 385XD (2635) 67 




When installing 

See the following figure for the direction of the 
speaker connector: 




When replacing 

Apply a model name label on the keyboard. 



68 IBM ThinkPad 380XD, 385XD 



1050 Keyboard and Speaker 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

Important: When you release latch B, be careful not to 
apply any force to area A (lenses for status 
indicators). 




IBM ThinkPad 380XD, 385XD (2635) 69 




When installing 

The following figure shows the route for the speaker 
cables. 




70 IBM ThinkPad 380XD, 385XD 



1060 CD-ROM Drive and Diskette Drive 
Assembly 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

Note: Be careful that the computer does not fall backward 
when you remove the CD-ROM and diskette drive 
assembly. 




Step 


Size (Quantity) 


Torque 


□ 


M 2.5 x 6 mm, nylon-coated (1) 


3-4 kgcm 


u 


M 2.5 x 6 mm, nylon-coated (1) 


3-4 kgcm 


B 


M 2.5 x 8 mm, nylon-coated (2) 


3-4 kgcm 


B 


M 2.5 x 6 mm, nylon-coated (1) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 71 



1070 Diskette Drive and CD-ROM Drive 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

• CD-ROM and Diskette Drive Assembly (1060) 

Note: When replacing, be sure to firmly tighten the pink 
and yellow screws. 

Diskette Drive 




72 IBM ThinkPad 380XD, 385XD 




Step 


Size (Quantity) 


Torque 


B 


M 2.6x4 mm Yellow (1) 


4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 73 



(Rear view) 




Step 


Size (Quantity) 


Torque 


□ 


M 2 x 1.7 mm, special-head, Blue 
(2) 


1.5-1.8 
kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



(£> 




74 IBM ThinkPad 380XD, 385XD 



Step 


Size (Quantity) 


Torque 


□ 


M 2.6 x 2.8 mm pink (3) 


4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



10X - 24X CD-ROM (05K8868) 

H _ ®*.R, _ (a). 




Step 


Size (Quantity) 


Torque 


□ 


M 2 x 1.7 mm, special-head, blue 
(2) 


1.5-1.8 
kgcm 


□ 


(a) M 2 x 1.7 mm, special-head, 
blue (2) 

(b) M 2 x 2.4 mm, special-head, 
yellow (2) 


1.5-1.8 
kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 75 



1080 LCD Unit 

• Battery Pack (1020) 

• Keyboard Unit (1040) 




Step 


Size (Quantity) 


Torque 


B 


M 2.5 x 6 mm, nylon-coated (5) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



76 IBM ThinkPad 380XD, 385XD 




Step 


Size (Quantity) 


Torque 


B 


M 2.5 x 6 mm, nylon-coated (1) 


3-4 kgcm 


B 


M 2.5 x 6 mm, special-head (1) 


3 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 77 




* When removing the LCD, be careful not to damage the 
latches. 



Step 


Size (Quantity) 


Torque 


Q 


M 2.5 x 6 mm, nylon-coated (3) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



78 IBM ThinkPad 380XD, 385XD 



1090 Fan Assembly, CPU Card, 
Thermal Rubber 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

• CD-ROM and Diskette Drive Assembly (1060) 

• LCD Unit (1080) 

Attention: 

When removing, be careful not to damage the CPU 
card. 




Step 


Size (Quantity) 


Torque 


□ 


M 2 x 6 mm, nylon-coated (2) 


2-3 kgcm 


B 


M 2 x 18 mm, nylon-coated (3) 


2-3 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 79 



2635-8xx/9xx/Axx/Bxx 




2635-Dxx/Exx/Fxx 




80 IBM ThinkPad 380XD, 385XD 



Step 


Size (Quantity) 


Torque 


□ 


M 2 x 6 mm, nylon-coated (2) 


2-3 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



When installing 

Make sure the connectors are fitted firmly by 
pressing the corners of the card. 

2635-8xx/9xx/Axx/Bxx 




2635-Dxx/Exx/Fxx 



^: 




A loose connection or a damaged card causes a 
power failure. 

The following figure shows the route of the fan 
assembly cables: 

Tape 




IBM ThinkPad 380XD, 385XD (2635) 81 



1100 Upper Shield Case 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

• CD-ROM/Diskette Drive Assembly (1060) 

• LCD Unit (1080) 




Step 


Size (Quantity) 


Torque 


u 


M 2.5 x 8 mm, nylon-coated (2) 


3-4 kgcm 


B 


M 2.5 x 6 mm, nylon-coated (3) 


3-4 kgcm 


B 


M 2.5 x 6 mm, bighead (1) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



82 IBM ThinkPad 380XD, 385XD 



1110 Box Speaker and Microphone 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

• CD-ROM and Diskette Drive Assembly (1060) 

• LCD Unit (1080) 

• Upper Shield Case (1100) 




Step 


Size (Quantity) 


Torque 


□ 


M 2.5 x 12 mm, nylon-coated (3) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 83 



When installing 

The following figure shows the route for the 
microphone and speaker cables: 




84 IBM ThinkPad 380XD, 385XD 



1120 DC/DC Card 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

• CD-ROM and Diskette Drive Assembly (1060) 

• LCD Unit (1080) 

• Upper Shield Case (1100) 



Pay attention that the connectors tend to be caught in the 
base cover. 



Connector 




Step 


Size (Quantity) 


Torque 


u 


M 2.5 x 22 mm, nylon-coated (2) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 85 



When installing 

The following figure shows the route for the 
microphone cable: 




86 IBM ThinkPad 380XD, 385XD 



1130 System Board and PC Card Slot 

1. The system unit serial number must be restored when 
the system board is replaced. To restore the system 
unit serial number, select the option "Set system 
identification" on the maintenance diskette. The flash 
ROM on the system board contains the vital product 
data (VPD) — that is, the system unit serial number, 
system board serial number, and other 
computer-unique data. 

2. Do not turn off the computer while restoring the VPD. 
The system unit serial number label is attached to the 
base cover. 

3. Before removing and replacing the system board 
assembly, make sure that the PC Cards are removed 
and the eject buttons are not sticking out. If the PC 
Card eject buttons are sticking out, pull them further 
out slightly and fold them to the right; then push up 
the system board assembly from the bottom. 

Battery Pack (1020) 

Keyboard Unit (1040) 

CD-ROM and Diskette Drive Assembly (1060) 

LCD Unit (1080) 

Fan Assembly/CPU Card (1090) 

Upper Shield Case (1100) 

Pay attention to the connectors that tend to catch in the 
cover. 

Connectors r 




Step 


Size (Quantity) 


Torque 


□ 


M 2.5 x 6 mm, nylon-coated (2) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 87 




Step 


Size (Quantity) 


Torque 


B 


M 2.5 x 6 mm, nylon-coated (2) 


3-4 kgcm 


□ 


Hex stud screw (6) 


3-4 kgcm 


B 


M 2.5 x 6 mm, nylon-coated (1) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



88 IBM ThinkPad 380XD, 385XD 



Connector 




Step 


Size (Quantity) 


Torque 


□ 


M 2 x 18 mm, nylon-coated (2) 


2-3 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 89 



11 40 Battery Pack Latch 



Battery Pack (1020) 

Keyboard Unit (1040) 

CD-ROM and Diskette Drive Assembly (1060) 

LCD Unit (1080) 

Fan Assembly/CPU Card (1090) 

Upper Shield Case (1100) 

System Board and PC Card Slot (1130) 




90 IBM ThinkPad 380XD, 385XD 



2010 LCD Front Cover 

• Memory-slot Cover (DIMM Card) (1010) 

• Battery Pack (1020) 

• Keyboard Unit (1040) 

• LCD Unit (1080) 

El El El LCD Front Cover 

: Control Knob 

Notes: 

1 . The LCD front cover has several latches. Release 
the latches as shown in the figure in step El ■ 

2. When replacing the control knob in step Q , make 
sure that it works correctly. 




IBM ThinkPad 380XD, 385XD (2635) 91 




Step 


Size (Quantity) 


Torque 


B 


M 2.5 x 6 mm, nylon-coated(2) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



92 IBM ThinkPad 380XD, 385XD 



2020 LCD Panel 



Memory-slot Cover (DIMM Card) (1010) 

Battery Pack (1020) 

Keyboard Unit (1040) 

LCD Unit (1080) 

LCD Front Cover (2010) 



Note on LCD identification 

You can distinguish between HPA LCD, TFT LCD type 
1 , and TFT LCD type 2 by the label on the LCD cable: 

HPA LCD: 05K9309 or 05K9320 

TFT LCD Type 1: 05K9312 or 05K9322 

TFT LCD Type 2: 05K9311 or 05K9321 



HPA LCD Panel 

(Labeled 05K9309 or 05K9320) 




Identification label: HITACHI 



IBM ThinkPad 380XD, 385XD (2635) 93 



Note: In step Q , lift the LCD panel slightly to disconnect 
the flexible cable in step Q . 




Step 


Size (Quantity) 


Torque 


D 


M 2.5 x 6 mm, nylon-coated(4) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



94 IBM ThinkPad 380XD, 385XD 



TFT LCD Panel 

— Note on TFT LCD identification 



You can distinguish between HPA LCD, TFT LCD type 
1 and type 2 by the label on the LCD cable. The 
labels are said as follows. 

HPA LCD: 05K9309 or 05K9320 

TFT LCD Type 1: 05K9312 or 05K9322 

TFT LCD Type 2: 05K9311 or 05K9321 




Identification label 



Step 


Size (Quantity) 


Torque 


□ 


M 2.5 x 6 mm, nylon-coated (4) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 95 



Type 1 (Labeled 05K9312 or 05K9322) 




Copper tape 



Identification label 



Type 2 (Labeled 05K9311 or 05K9321) 

m 




Identification label 



96 IBM ThinkPad 380XD, 385XD 



2030 LCD Inverter Card 



Memory-slot Cover (DIMM Card) (1010) 

Battery Pack (1020) 

Keyboard Unit (1040) 

CD-ROM/Diskette Drive Assembly (1060) 

LCD Unit (1080) 

LCD Front Cover (2010) 

LCD Panel (2020) 



HPA LCD 




Step 


Size (Quantity) 


Torque 


□ 


M 2.5 x 6 mm, nylon-coated(l) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



IBM ThinkPad 380XD, 385XD (2635) 97 



TFT LCD 




Step 


Size (Quantity) 


Torque 


B 


M 2.0 x 3.7 mm, nylon-coated (2) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



98 IBM ThinkPad 380XD, 385XD 



2040 LCD Misc. Parts 



Memory-slot Cover (DIMM Card) (1010) 

Battery Pack (1020) 

Keyboard Unit (1040) 

CD-ROM/Diskette Drive Assembly (1060) 

LCD Unit (1080) 

LCD Front Cover (2010) 

LCD Panel (2020) 

LCD Inverter Card (2030) 

Hinges/Latches 

HPA LCD 

El El El Hinges 

Q El : Latches 




IBM ThinkPad 380XD, 385XD (2635) 99 



Step 


Size (Quantity) 


Torque 


□ 


(a) M 2.5 x 6mm, nylon-coated (2) 


3-4 kgcm 


(b) M 2.5 x 6mm, special-head (1) 


3-3.5 kgcm 


a 


M 2.5 x 6mm, nylon-coated (2) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



When replacing: When replacing the hinge covers 

removed in step Q , attach them to the shield 
sheet with double-sided adhesive tape as the old 
ones had been attached. 



100 IBM ThinkPad 380XD, 385XD 



TFT LCD: This figure shows the TFT type 1 LCD. For 
the type 2, the same procedure applies. 

El El El Hinges 

Q El : Latches 




Step 


Size (Quantity) 


Torque 


□ 


(a) M 2.5 x 6mm, nylon-coated (2) 


3-4 kgcm 


(b) M 2.5 x 6mm, special-head (1) 


3-3.5 kgcm 


B 


M 2.5 x 6mm, nylon-coated (2) 


3-4 kgcm 


Note: Make sure you use the correct screw, and tighten all 
screws firmly to the torque shown in the table if you have a 
torque screwdriver. Never use a screw that you removed. 
Use a new one. Make sure the screws are tightened 
firmly. 



When replacing: When replacing the hinge covers 

removed in step Q , attach them to the shield 
sheet with double-sided adhesive tape as the old 
ones had been attached. 



IBM ThinkPad 380XD, 385XD (2635) 101 



When replacing: 

Replace the LCD miscellaneous parts as follows: 




102 IBM ThinkPad 380XD, 385XD 



2050 LCD Cable 




IBM ThinkPad 380XD, 385XD (2635) 103 



Locations 


Front View 


D 


LCD latches 


B 


Color LCD screen 


B 


(TFT display model) Brightness control 


B 


(HPA display model) Contrast control 


□ 


Fan louver 


B 


Infrared port 


B 


Diskette eject button 


B 


Diskette drive 


B 


CD-ROM emergency eject hole 


B 


CD-ROM eject button 


EB 


CD-ROM in-use indicator 


ED 


CD-ROM drive 


EB 


Stereo speakers 


EB 


Palm rest 


EB 


TrackPoint III 


EB 


Fn key 


EB 


Keyboard 


EB 


Speaker (Box speakensubwoofer) 


EB 


Indicator panel 


EB 


Built-in microphone 




104 IBM ThinkPad 380XD, 385XD 



Bottom View 


D 


Memory-slot cover 


B 


Power shutdown switch 


B 


Memory slot 


U 


Expansion connectors 


B 


Battery pack lock 


B 


Battery pack 


B 


Serial number label 




IBM ThinkPad 380XD, 385XD (2635) 105 



Rear View 


D 


Hard disk drive 


□ 


Security keyhole 


Q 


PC Card eject buttons 


□ 


PC Card slots 


B 


Volume control 


D 


Microphone jack/Line-in jack 


D 


Headphone jack 


D 


Power switch 


□ 


External-input device connector 


ill 


Power jack 


ED 


Universal serial bus (USB) port 


m 


Serial connector 


ED 


Parallel connector 


m 


External-monitor connector 


m 


Connector cover 


m 


External suspend mode indicator 


m 


External battery indicator 




iDDDnnDnnDnnnno 



i^smm 



gllgigggl (p)(S) 



m IE] EB rtina ci 



106 IBM ThinkPad 380XD, 385XD 



Parts Listing 




Note: FRU number 8 is available only on the 
2635-Dxx/Exx/Fxx. 



IBM ThinkPad 380XD, 385XD (2635) 107 



System Unit 

— Note on LCD 



See page 93 for the LCD identification. 



Ret No. FRU Name FRU No. 

1 LCD Assembly (12.1 HPA) 

see page 111 for LCD FRU 
LCD Assembly (12.1 TFT type 1) 

see page 1 13 for LCD FRU 
LCD Assembly (12.1 TFT type 2) 

see page 1 15 for LCD FRU 

2 LCD Cable Holder (included in Ref.No.15 

on pages 112, 114 and 116) 

3 Stereo Speaker Assembly 02K4330 

4 Support Plate 

(included in Base Misc. Parts Kit on page 109) 

5 Right Shield Case 

For 2635-8xx/9xx/Axx/Bxx 05K4749 

For 2635-Dxx/Exx/Fxx 05K5237 



6 


Fan 


05K4746 


7 


Air Duct 






(included in Base Misc. Parts Kit on page 109) 


8 


MMO Spacer for 2635-Dxx/Exx/Fxx 


05K5234 


9 


Thermal Rubber 






For 2635-8xx/9xx/Axx/Bxx 


05K4748 




For 2635-Dxx/Exx/Fxx 


05K5235 


10 


CPU Card (233 MHz) 






For 2635-8xx/9xx/Axx/Bxx 


12J0408 




For 2635-Dxx/Exx/Fxx 


10L0888 




CPU Card (266 MHz) 






For 2635-8xx/9xx/Axx/Bxx 


10L0885 




For 2635-Dxx/Exx/Fxx 


10L0887 


11 


Heat Sink 


05K4747 


12 


Connector Bracket (see page 1 10 ) 




13 


CD/Diskette Drive Connector Assembly 
(with-CD model) 






For 2635-8xx/9xx/Axx/Bxx 


05K2637 




For 2635-Dxx/Exx/Fxx 


05K2657 


13 


Diskette Drive Connector Assembly 
(non-CD model) 


83H6527 



14 CD-ROM/Diskette Drive Assembly (see page 1 10 ) 



108 IBM ThinkPad 380XD, 385XD 



Ref. No. FRU Name FRU No. 

15 Connector Cover 05K4744 

16 Backup Battery 02K6498 

17 SO-DIMM 

see "Option Parts List" on page 1 18 

18 Memory Slot Cover 05K4758 

19 Battery Pack 

For 2635-8xx/9xx/Axx/Bxx 73H9951 

For 2635-Dxx/Exx/Fxx 02K6509 

20 Base Cover Assembly 05K4743 

21 Battery Pack Lock Assembly 05K4775 

22 Power Switch Knob 

(included in Base Misc. Parts Kit on page 109) 

23 HDD Cable Assembly 05K2636 

24 Hard Disk Drive (see page 110) 

25 Lower Shield Case 05K4745 

26 HDD Lid 05K4753 

27 HDD Lid Coin Screw 05K4754 

28 DC/DC Card 

For 2635-8xx/9xx/Axx/Bxx 05K3195 

For 2635-Dxx/Exx/Fxx 10L0930 

29 PC Card Slot 05K4862 

30 Box Speaker 

(including Power Switch) 02K4328 

31 Microphone Assembly 02K4329 

32 Upper Shield Case 05K4750 

33 Keyboard Bezel 05K4755 

34 Keyboard (seepage 117) 

35 TrackPoint III Cap 84G6536 

36 System Board 

For 2635-8xx/9xx/Axx/Bxx 05K3196 

For 2635-Dxx/Exx/Fxx 10L0929 

Base Misc. Parts Kit 05K4774 
including: Air Duct (Ref.No.2) 

Power Switch Knob(Ref.No.21) 
Support Plate (Ref.No.4.) 

Logo for LG Korea 1 1J8373 

Cable Holding Tape 1 1 J8376 



IBM ThinkPad 380XD, 385XD (2635) 109 



Hard Disk Drive, CD-ROM, Diskette 
Drive 




Ref. No. 


FRU Name 


FRU No. 


1 


Connector Bracket (included in Ref.No.4 
CD/Diskette Drive Bracket) 




2 


CD/Diskette Drive Connector Assembly 






For 2635-8xx/9xx/Axx/Bxx 


05K2637 




For 2635-Dxx/Exx/Fxx 


05K2657 


2 


Diskette Drive Connector Assembly 






(for non-CD model) 


83H6527 


3 


CD-ROM(10X-24X) 


05K8868 


4 


CD/Diskette Drive Bracket Kit 
including: 


05K4751 




CD/Diskette Drive Bracket (Ref.No.4) 




Connector Bracket (Ref.No.1) 






Absorber (Ref.No.5) 




5 


Absorber (included in Ref.No.4 
CD/Diskette Drive Bracket) 




6 


Diskette Drive 


11J8338 


7 


Diskette Drive Bezel 


73H9932 


7 


Blank Bezel (for non-CD model) 


73H9934 


8 


Base Cover Assembly 


05K4743 


9 


HDD Bracket 


05K4752 


10 


Hard Disk Drive, 2.1 GB (12.5 mm) 


22L0004 


10 


Hard Disk Drive, 3.2 GB (12.5 mm) 


83H7086 


10 


Hard Disk Drive, 4.0 GB (12.5 mm) 


83H7085 


10 


Hard Disk Drive, 5.1 GB (17 mm) 
(See page 65 for relation between 
the HDD and the spacers.) 


83H7084 


11 


HDD Spacer 


05K4776 



110 IBM ThinkPad 380XD, 385XD 



LCD FRU 

HPA (Labeled 05K9309 or 05K9320) 




IBM ThinkPad 380XD, 385XD (2635) 1 1 1 



Ret No. FRU Name FRU No. 

1 Front Bezel 

(included in Ref.No.13 LCD Cover Kit) 

2 Contrast Control Knob 

(included in Ref.No.15 LCD Misc. Parts Kit) 

3 LCD Panel 05K9336 

4 Inverter Card 05K3194 

5 LCD Cable Assembly 12J0139 

6 Right Hinge (included in Ref.No.14 Hinge Kit) 

7 LED Lens (included in Ref.No.15 LCD Misc. Kit) 

8 Insulation Sheet 

(included in Ref.No.13 LCD Cover Kit) 

9 LCD Cover 

(included in Ref.No.13 LCD Cover Kit) 

10 Right Latch 

(included in Ref.No.15 LCD Misc. Parts Kit) 

11 Left Latch 

(included in Ref.No.15 LCD Misc. Parts Kit) 

12 Left Hinge (included in Ref.No.14 Hinge Kit) 

13 LCD Cover Kit 05K4779 

including: 

Front Bezel (Ref.No.1) 
Insulation Sheet (Ref.No.8) 
LCD Cover (Ref.No.9) 
Logo (Front, Rear) 
Hinge Cap 
Screw Cap 

14 Hinge Kit 73H9942 

including: 

Right Hinge (Ref.No.6) 
Left Hinge (Ref.No.14) 
Screw Cap 

15 LCD Misc. Parts Kit 73H9949 

including: 

LCD Cable Holder (Ref.No.2 on page 108) 

Contrast Control Knob (Ref.No.2) 

LED Lens (Ref.No.7) 

Right Latch, Spring, Holder (Ref.No.10) 

Left Latch, Spring, Holder (Ref.No.11) 

Screw Cap 



112 IBM ThinkPad 380XD, 385XD 



TFT 1 (Labeled 05K9312 or 05K9322) 




IBM ThinkPad 380XD, 385XD (2635) 1 1 3 



Ret No. 
1 



10 



11 



12 
13 



14 



15 



FRU Name FRU No. 

Front Bezel 

(included in Ref.No.13 LCD Cover Kit) 
Brightness Control Knob 
(included in Ref.No.15 LCD Misc. Parts Kit) 
LCD Panel 05K9335 

Inverter Card 05K3197 

LCD Cable Assembly 73H9948 

Right Hinge 

(included in Ref.No.14 Hinge Kit) 
LED Lens 

(included in Ref.No.15 LCD Misc. Kit) 
Insulation Sheet 

(included in Ref.No.13 LCD Cover Kit) 
LCD Cover 

(included in Ref.No.13 LCD Cover Kit) 
Right Latch 

(included in Ref.No.15 LCD Misc. Parts Kit) 
Left Latch 

(included in Ref.No.15 LCD Misc. Parts Kit) 
Left Hinge (included in Ref.No.14 Hinge Kit) 
LCD Cover Kit 05K4780 

including: 

Front Bezel (Ref.No.1) 
Insulation Sheet (Ref.No.8) 
LCD Cover (Ref.No.9) 
Logo (Front, Rear) 
Hinge Cap 
Screw Cap 
Hinge Kit 73H9943 

including: 

Right Hinge (Ref.No.6) 
Left Hinge (Ref.No.14) 
Screw Cap 
LCD Misc. Parts Kit 73H9949 

including: 

LCD Cable Holder (Ref.No.2 on page 108) 

Contrast Control Knob (Ref.No.2) 

LED Lens (Ref.No.7) 

Right Latch, Spring, Holder (Ref.No.10) 

Left Latch, Spring, Holder (Ref.No.11) 

Screw Cap 



114 IBM ThinkPad 380XD, 385XD 



TFT 2 (Labeled 05K9311 or 05K9321) 



12.. 



11 




IBM ThinkPad 380XD, 385XD (2635) 1 1 5 



Ret No. FRU Name FRU No. 

1 Front Bezel 

(included in Ref.No.13 LCD Cover Kit) 

2 Brightness Control Knob 

(included in Ref.No.15 LCD Misc. Parts Kit) 

3 LCD Panel 05K9315 

4 Inverter Card 05K3150 

5 LCD Cable Assembly 05K4358 

6 Right Hinge (included in Ref.No.14 Hinge Kit) 

7 LED Lens (included in Ref.No.15 LCD Misc. Kit) 

8 Insulation Sheet 

(included in Ref.No.13 LCD Cover Kit) 

9 LCD Cover 

(included in Ref.No.13 LCD Cover Kit) 

10 Right Latch 

(included in Ref.No.15 LCD Misc. Parts Kit) 

11 Left Latch 

(included in Ref.No.15 LCD Misc. Parts Kit) 

12 Left Hinge (included in Ref.No.14 Hinge Kit) 

13 LCD Cover Kit 05K4781 

including: 

Front Bezel (Ref.No.1) 
Insulation Sheet (Ref.No.8) 
LCD Cover (Ref.No.9) 
Logo (Front, Rear) 
Hinge Cap 
Screw Cap 

14 Hinge Kit 73H9943 

including: 

Right Hinge (Ref.No.6) 
Left Hinge (Ref.No.14) 
Screw Cap 

15 LCD Misc. Parts Kit 73H9949 

including: 

LCD Cable Holder (Ref.No.2 on page 108) 

Contrast Control Knob (Ref.No.2) 

LED Lens (Ref.No.7) 

Right Latch, Spring, Holder (Ref.No.10) 

Left Latch, Spring, Holder (Ref.No.11) 

Screw Cap 



116 IBM ThinkPad 380XD, 385XD 



Keyboard 



Arabic 

Belgian 

Canadian French 

Czech 

Danish 

Dutch 

French 

German 

Greek 

Hebrew 

Hungarian 

Italian 

Japanese 

Korean 

Latin American Spanish 

Norwegian 

Poland 

Portuguese 

Russian 

Slovakian 

Slovenian 

Spanish 

Swedish or Finnish 

Swiss 

Taiwanese 

Thai 

Turkish 

U.K. English 

U.S. English 



02K4351 
02K4341 
02K4344 
02K4352 
02K4343 
02K4337 
02K4335 
02K4334 
02K4353 
02K4354 
02K4355 
02K4336 
02K4333 
02K4345 
02K4348 
02K4342 
02K4357 
02K4356 
02K4346 
02K4358 
02K4359 
02K4339 
02K4338 
02K4340 
02K4347 
02K4349 
02K4350 
02K4332 
02K4331 



IBM ThinkPad 380XD, 385XD (2635) 1 1 7 



Option Parts List 

Miscellaneous Parts 

FRU Name FRU Number 

Screw Kit 05K4837 

including: 
Hex stud, D-Sub (6) 
M2 x 1 .7, Special (4) 
M2 x 2.4, Special (2) 
M2 x 6, Bind, nylon-coated (4) 
M2 x 1 8, Bind, nylon-coated (3) 
M2.5 x 6, Special (2) 
M2.5x6, Big (1) 

M2.5 x 6, Bind, Black, nylon-coated (30) 
M2.5 x 8, Bind, Black, nylon-coated (7) 
M2.5 x 12, Bind, nylon-coated (3) 
M2.5 x 22, Bind, nylon-coated (2) 
M2.5 x 25, Bind, nylon-coated (1) 
M2.6 x 2.8, Bind (3) 
M2.6 x 4, Bind (2) 
M3 x 3, Flathead, nylon-coated (4) 
Screw tapping (2) 



118 IBM ThinkPad 380XD, 385XD 



Options 
— Notes 



1. 



If you need to replace the AC Adapter, use the 
one for the country you are in even if the 
computer is from a different country. 
The warranty for the system unit does not apply 
to all options. 



FRU Name FRU Number 

Headset 85G1529 

4.0 GB Hard Disk Drive Assembly 83H7085 

AC Adapter (56 W, 3-prong)l 1 1 J8956 

AC Adapter (56 W, 3-prong)l 02K6496 

AC Adapter (for Japan, 2-prong)2 1 1J8974 

AC Adapter (for Japan, 2-prong)2 02K6497 

Microphone 66G7871 

PS/2 Miniature Mouse 95F5723 

ThinkPad 380/385 Port Replicator 84G1320 

ThinkPad 560 Port Replicator 12J1602 

ThinkPad Enhanced Port Replicator 11J9000 

Upper Cover Set 84G1321 

SO-DIMM 8 MB 70ns 42H2767 

SO-DIMM 16 MB 70ns 42H2768 

SO-DIMM 16 MB 60ns 01K1115 

SO-DIMM 32 MB 60ns 42H2769 

SO-DIMM 64 MB 60ns 42H2817 
Interface Cable to System for Keyboard 84G2531 
Interface Cable to Keyboard for Keypad 84G2532 

Mini-DIN to Mini-DIN Cable 84G6474 



1 The 3-prong adapters are interchangeable; you can order either 
one. 

2 The 2-prong adapters are interchangeable; you can order either 
one. 

IBM ThinkPad 380XD, 385XD (2635) 1 1 9 



Numeric Keypad 



Belgian 

Canadian French 

Danish 

Dutch 

French 

German 

Greek 

Hebrew 

Icelandic 

Italian 

Japanese 

Norwegian 

Spanish 

Swedish or Finnish 

Swiss French 

Swiss German 

Turkish 

U.K. English 

U.S. English 



95F5741 
95F5466 
95F5467 
95F5467 
95F6313 
95F6314 
95F5467 
95F5741 
95F5467 
95F6316 
79F6401 
95F5467 
95F6315 
95F5468 
95F571 1 
95F5715 
95F5467 
95F5741 
95F5741 



Black Keypad 



French 

German 

Italian 

Norwegian 

Swedish 

U.K. English 

U.S. English 



84G6286 
84G6280 
84G6292 
84G6310 
84G6304 
84G6298 
84G2530 



Black Keyboard 



French 

German 

Italian 

Norwegian 

Swedish 

U.K. English 

U.S. English 



84G6285 
84G6279 
84G6291 
84G6309 
84G6303 
84G6297 
84G2529 



Accessories 

Keyboard/Mouse Cable 



54G0444 



Tools 



Tri-Connector Wrap Plug 


72X8546 


PC Test Card 


35G4703 


Audio Wrap Cable 


66G5180 


USB Parallel Test Cable 


05K2580 


Screwdriver Kit 


95F3598 


Torque Screwdriver 


05K4695 


5-mm Socket Wrench 


05K4694 


Screwdriver 


05K4693 


ThinkPad Hardware Maintenance 




Diskette Version 1 .40 




(See "Maintenance Diskette Download" 


on page 57.) 



120 IBM ThinkPad 380XD, 385XD 



Power Cords 

IBM power cords for a specific country are usually 
available only in that country: 

For 2-pin power cords: 



IBM 

Power 

Cord 

Part 

Number 


Used in These Countries 


13H5264 


Bahamas, Barbados, Bermuda, Bolivia, Canada, 
Cayman Islands, Colombia, Costa Rica, 
Dominican Republic, Ecuador, El Salvador, 
Guatemala, Guyana, Haiti, Honduras, Jamaica, 
Korea (South), Mexico, Netherlands Antilles, 
Nicaragua, Panama, Peru, Philippines, Saudi 
Arabia, Suriname, Taiwan, Thailand, Trinidad 
(West Indies), United States of America, 
Venezuela 


13H5267 


Abu Dhabi, Albania, Antigua, Bahrain, Brunei, 
Dubai, Fiji, India, Ireland, Kenya, Kuwait, Macao, 
Malaysia, Nigeria, Oman, People's Republic of 
China (including Hong Kong), Qatar, Singapore, 
United Kingdom 


13H5270 


Austria, Belgium, Bulgaria, Chile, Czech 
Republic, Denmark, Egypt, Finland, France, 
Germany, Greece, Hungary, Iceland, Indonesia, 
Israel, Italy, Netherlands, Norway, Poland, 
Portugal, Romania, Slovakia, Spain, Sweden, 
Switzerland, Turkey, former Yugoslavia 


13H5273 


Japan 


13H5276 


Argentina, Australia, New Guinea, New Zealand, 
Papua New Guinea, Paraguay, Uruguay 


13H5279 


Bangladesh, Pakistan, South Africa, Sri Lanka 



IBM ThinkPad 380XD, 385XD (2635) 121 



For 3-pin slim power cords: 



IBM 
Power 
Cord 
P/N 


Used in These Countries 


76H3514 


Argentina, Australia, New Zealand, Papua New 
Guinea, Paraguay, Uruguay 


76H3516 


Bahamas, Barbados, Bermuda, Bolivia, Canada, 
Cayman Islands, Colombia, Costa Rica, 
Dominican Republic, Ecuador, El Salvador, 
Guatemala, Guyana, Haiti, Honduras, Jamaica, 
Mexico, Netherlands Antilles, Nicaragua, 
Panama, Peru, Philippines, Saudi Arabia, 
Suriname, Taiwan, Trinidad (West Indies), 
United States of America, Venezuela, Thailand 


76H3518 


Austria, Belgium, Bulgaria, Czech Republic, 
Egypt, Finland, France, Germany, Greece, 
Hungary, Iceland, Indonesia, Netherlands, 
Norway, Poland, Portugal, Romania, Slovakia, 
Spain, Sweden, Turkey, former Yugoslavia 


76H3520 


Denmark 


76H3522 


Bangladesh, Pakistan, South Africa, Sri Lanka 


76H3524 


Abu Dhabi, Albania, Antigua, Bahrain, Brunei, 
Dubai, Fiji, India, Ireland, Kenya, Kuwait, Macao, 
Malaysia, Nigeria, Oman, People's Republic of 
China (including Hong Kong), Qatar, Singapore, 
United Kingdom 


76H3526 


Japan 


76H3528 


Liechtenstein, Switzerland 


76H3530 


Chile, Ethiopia, Italy, Libya 


76H3532 


Israel 


76H3535 


Korea 



122 IBM ThinkPad 380XD, 385XD 



Notices 

References in this publication to IBM products, programs, 
or services do not imply that IBM intends to make these 
available in all countries in which IBM operates. Any 
reference to an IBM product, program, or service is not 
intended to state or imply that only that IBM product, 
program, or service may be used. Any functionally 
equivalent product, program, or service that does not 
infringe any of the intellectual property rights of IBM may 
be used instead of the IBM product, program, or service. 
The evaluation and verification of operation in conjunction 
with other products, except those expressly designated by 
IBM, are the responsibility of the user. 

IBM may have patents or pending patent applications 
covering subject matter in this document. The furnishing 
of this document does not give you any license to these 
patents. You can send license inquiries, in writing, to the 
IBM Director of Licensing, IBM Corporation, 500 Columbus 
Avenue, Thornwood, NY 10594, U.S.A. 

Trademarks 

The following terms are trademarks of the IBM Corporation 
in the United States or other countries or both: 

IBM 

ThinkPad 
TrackPoint 
TrackPoint III 

Microsoft, Windows, and the Windows 95 flag logo are 
trademarks or registered trademarks of Microsoft 
Corporation. 

Pentium®, MMX", ProShare®, LANDesk®, and 
ActionMedia® are trademarks or registered trademarks of 
Intel Corporation in the U.S. and other countries. 

Other company, product, and service names used in this 
publication may be trademarks or service marks of others. 



IBM ThinkPad 380XD, 385XD (2635) 123 



Part Number: 10L9623 



Printed in U.S.A.